MacでDocker(boot2docker)


Mac OS X Yosemite 10.10.2でdockerのインストール

```bash
$ brew update
$ brew install docker boot2docker
$ boot2docker init
$ boot2docker up
Waiting for VM and Docker daemon to start...
........................oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
Started.
  Trying to get Docker socket one more time
Error requesting socket: exit status 2
Writing /Users/<user>/.boot2docker/certs/boot2docker-vm/ca.pem
Writing /Users/<user>/.boot2docker/certs/boot2docker-vm/cert.pem
Writing /Users/<user>/.boot2docker/certs/boot2docker-vm/key.pem
Auto detection of the VM's Docker socket failed.
Please run `boot2docker -v up` to diagnose. 
```

なんかエラーっぽい・・・原因は何だろう？最初は分からず進めていたがどうもdockerに繋がらない様なメッセージが出たのでググるとdown,delete,init後に`boot2docker -v up`

```bash
$ boot2docker down
$ boot2docker delete
$ boot2docker init
$ boot2docker -v up
Boot2Docker-cli version: v1.5.0
Git commit: ccd9032
2015/04/01 01:56:29 executing: VBoxManage showvminfo boot2docker-vm --machinereadable
error in run: Failed to get machine "boot2docker-vm": machine not exist
$ boot2docker init
$ boot2docker -v up
Boot2Docker-cli version: v1.5.0
Git commit: ccd9032
2015/04/01 01:56:54 executing: VBoxManage showvminfo boot2docker-vm --machinereadable
2015/04/01 01:56:54 executing: VBoxManage guestproperty set boot2docker-vm /VirtualBox/GuestAdd/SharedFolders/MountPrefix /
2015/04/01 01:56:54 executing: VBoxManage guestproperty set boot2docker-vm /VirtualBox/GuestAdd/SharedFolders/MountDir /
2015/04/01 01:56:54 executing: VBoxManage sharedfolder add boot2docker-vm --name Users --hostpath /Users --automount
2015/04/01 01:56:54 executing: VBoxManage setextradata boot2docker-vm VBoxInternal2/SharedFoldersEnableSymlinksCreate/Users 1
2015/04/01 01:56:54 executing: VBoxManage startvm boot2docker-vm --type headless
Waiting for VM "boot2docker-vm" to power on...
VM "boot2docker-vm" has been successfully started.
2015/04/01 01:56:55 executing: VBoxManage showvminfo boot2docker-vm --machinereadable
Waiting for VM and Docker daemon to start...
.Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0).Connecting to tcp://localhost:2022 (attempt #0)2015/04/01 01:57:16 executing: /usr/bin/ssh ssh -o IdentitiesOnly=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=quiet -p 2022 -i /Users/<user>/.ssh/id_boot2docker docker@localhost ip addr show dev eth1
SSH returned: 4: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 08:00:27:b3:95:a4 brd ff:ff:ff:ff:ff:ff
    inet 192.168.59.103/24 brd 192.168.59.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::a00:27ff:feb3:95a4/64 scope link tentative 
       valid_lft forever preferred_lft forever

END SSH
VM Host-only IP address: 192.168.59.103
Waiting for Docker daemon to start...
o2015/04/01 01:57:17 executing: /usr/bin/ssh ssh -o IdentitiesOnly=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=quiet -p 2022 -i /Users/<user>/.ssh/id_boot2docker docker@localhost grep tcp:// /proc/$(cat /var/run/docker.pid)/cmdline
cat: can't open '/var/run/docker.pid': No such file or directory
Error requesting socket: exit status 1
o2015/04/01 01:57:18 executing: /usr/bin/ssh ssh -o IdentitiesOnly=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=quiet -p 2022 -i /Users/<user>/.ssh/id_boot2docker docker@localhost grep tcp:// /proc/$(cat /var/run/docker.pid)/cmdline
cat: can't open '/var/run/docker.pid': No such file or directory

	  :
	<中略>
	  :

Error requesting socket: exit status 1
o2015/04/01 01:57:25 executing: /usr/bin/ssh ssh -o IdentitiesOnly=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=quiet -p 2022 -i /Users/<user>/.ssh/id_boot2docker docker@localhost grep tcp:// /proc/$(cat /var/run/docker.pid)/cmdline
SSH returned: tcp://0.0.0.0:2376

END SSH
2015/04/01 01:57:25 executing: /usr/bin/ssh ssh -o IdentitiesOnly=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=quiet -p 2022 -i /Users/<user>/.ssh/id_boot2docker docker@localhost ip addr show dev eth1
SSH returned: 4: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 08:00:27:b3:95:a4 brd ff:ff:ff:ff:ff:ff
    inet 192.168.59.103/24 brd 192.168.59.255 scope global eth1
       valid_lft forever preferred_lft forever
    inet6 fe80::a00:27ff:feb3:95a4/64 scope link 
       valid_lft forever preferred_lft forever

END SSH

Started.
2015/04/01 01:57:25 executing: /usr/bin/ssh ssh -o IdentitiesOnly=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=quiet -p 2022 -i /Users/<user>/.ssh/id_boot2docker docker@localhost tar c /home/docker/.docker/*.pem
tar: Removing leading `/' from member names
Writing /Users/<user>/.boot2docker/certs/boot2docker-vm/ca.pem
Writing /Users/<user>/.boot2docker/certs/boot2docker-vm/cert.pem
Writing /Users/<user>/.boot2docker/certs/boot2docker-vm/key.pem

To connect the Docker client to the Docker daemon, please set:
    export DOCKER_TLS_VERIFY=1
    export DOCKER_HOST=tcp://192.168.59.103:2376
    export DOCKER_CERT_PATH=/Users/<user>/.boot2docker/certs/boot2docker-vm
```

`export`が出ていれば正常に入ったっぽい。
上記`export`を`.bash_profile`に追記する。

とりあえずcentos 6系を落とす

```bash
$ docker pull centos:6.6
511136ea3c5a: Pull complete 
5b12ef8fd570: Pull complete 
0bc55ae673f7: Pull complete 
centos:6.6: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security.
Status: Downloaded newer image for centos:6.6
$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
centos              6.6                 0bc55ae673f7        3 weeks ago         202.6 MB
```

最初に`yum update`をかける

```bash
$ docker run -it centos:6.6 bash
[root@d8220aff7114 /]# yum update
Loaded plugins: fastestmirror
Setting up Update Process
base                                                                                                                                     | 3.7 kB     00:00     
base/primary_db                                                                                                                          | 4.6 MB     00:01     
extras                                                                                                                                   | 3.4 kB     00:00     
extras/primary_db                                                                                                                        |  30 kB     00:00     
updates                                                                                                                                  | 3.4 kB     00:00     
updates/primary_db                                                                                                                       | 2.7 MB     00:01     
Resolving Dependencies
--> Running transaction check
---> Package bind-libs.x86_64 32:9.8.2-0.30.rc1.el6 will be updated
---> Package bind-libs.x86_64 32:9.8.2-0.30.rc1.el6_6.2 will be an update
---> Package bind-utils.x86_64 32:9.8.2-0.30.rc1.el6 will be updated
---> Package bind-utils.x86_64 32:9.8.2-0.30.rc1.el6_6.2 will be an update
---> Package curl.x86_64 0:7.19.7-37.el6_5.3 will be updated
---> Package curl.x86_64 0:7.19.7-40.el6_6.4 will be an update
---> Package cyrus-sasl-lib.x86_64 0:2.1.23-15.el6 will be updated
---> Package cyrus-sasl-lib.x86_64 0:2.1.23-15.el6_6.2 will be an update
---> Package glibc.x86_64 0:2.12-1.149.el6 will be updated
---> Package glibc.x86_64 0:2.12-1.149.el6_6.5 will be an update
---> Package glibc-common.x86_64 0:2.12-1.149.el6 will be updated
---> Package glibc-common.x86_64 0:2.12-1.149.el6_6.5 will be an update
---> Package initscripts.x86_64 0:9.03.46-1.el6.centos will be updated
---> Package initscripts.x86_64 0:9.03.46-1.el6.centos.1 will be an update
---> Package iproute.x86_64 0:2.6.32-32.el6_5 will be updated
---> Package iproute.x86_64 0:2.6.32-33.el6_6 will be an update
---> Package libcurl.x86_64 0:7.19.7-37.el6_5.3 will be updated
---> Package libcurl.x86_64 0:7.19.7-40.el6_6.4 will be an update
---> Package libssh2.x86_64 0:1.4.2-1.el6 will be updated
---> Package libssh2.x86_64 0:1.4.2-1.el6_6.1 will be an update
---> Package libxml2.x86_64 0:2.7.6-14.el6_5.2 will be updated
---> Package libxml2.x86_64 0:2.7.6-17.el6_6.1 will be an update
---> Package nss.x86_64 0:3.16.1-14.el6 will be updated
---> Package nss.x86_64 0:3.16.2.3-3.el6_6 will be an update
---> Package nss-softokn.x86_64 0:3.14.3-17.el6 will be updated
---> Package nss-softokn.x86_64 0:3.14.3-22.el6_6 will be an update
---> Package nss-softokn-freebl.x86_64 0:3.14.3-17.el6 will be updated
---> Package nss-softokn-freebl.x86_64 0:3.14.3-22.el6_6 will be an update
---> Package nss-sysinit.x86_64 0:3.16.1-14.el6 will be updated
---> Package nss-sysinit.x86_64 0:3.16.2.3-3.el6_6 will be an update
---> Package nss-tools.x86_64 0:3.16.1-14.el6 will be updated
---> Package nss-tools.x86_64 0:3.16.2.3-3.el6_6 will be an update
---> Package nss-util.x86_64 0:3.16.1-3.el6 will be updated
---> Package nss-util.x86_64 0:3.16.2.3-2.el6_6 will be an update
---> Package openssl.x86_64 0:1.0.1e-30.el6 will be updated
---> Package openssl.x86_64 0:1.0.1e-30.el6_6.7 will be an update
---> Package policycoreutils.x86_64 0:2.0.83-19.47.el6 will be updated
---> Package policycoreutils.x86_64 0:2.0.83-19.47.el6_6.1 will be an update
---> Package rpm.x86_64 0:4.8.0-37.el6 will be updated
---> Package rpm.x86_64 0:4.8.0-38.el6_6 will be an update
---> Package rpm-libs.x86_64 0:4.8.0-37.el6 will be updated
---> Package rpm-libs.x86_64 0:4.8.0-38.el6_6 will be an update
---> Package rpm-python.x86_64 0:4.8.0-37.el6 will be updated
---> Package rpm-python.x86_64 0:4.8.0-38.el6_6 will be an update
---> Package tzdata.noarch 0:2014g-1.el6 will be updated
---> Package tzdata.noarch 0:2015b-1.el6 will be an update
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================================================================================================
 Package                                   Arch                          Version                                           Repository                      Size
================================================================================================================================================================
Updating:
 bind-libs                                 x86_64                        32:9.8.2-0.30.rc1.el6_6.2                         updates                        884 k
 bind-utils                                x86_64                        32:9.8.2-0.30.rc1.el6_6.2                         updates                        185 k
 curl                                      x86_64                        7.19.7-40.el6_6.4                                 updates                        194 k
 cyrus-sasl-lib                            x86_64                        2.1.23-15.el6_6.2                                 updates                        136 k
 glibc                                     x86_64                        2.12-1.149.el6_6.5                                updates                        3.8 M
 glibc-common                              x86_64                        2.12-1.149.el6_6.5                                updates                         14 M
 initscripts                               x86_64                        9.03.46-1.el6.centos.1                            updates                        943 k
 iproute                                   x86_64                        2.6.32-33.el6_6                                   updates                        365 k
 libcurl                                   x86_64                        7.19.7-40.el6_6.4                                 updates                        166 k
 libssh2                                   x86_64                        1.4.2-1.el6_6.1                                   updates                        123 k
 libxml2                                   x86_64                        2.7.6-17.el6_6.1                                  updates                        801 k
 nss                                       x86_64                        3.16.2.3-3.el6_6                                  updates                        834 k
 nss-softokn                               x86_64                        3.14.3-22.el6_6                                   updates                        262 k
 nss-softokn-freebl                        x86_64                        3.14.3-22.el6_6                                   updates                        167 k
 nss-sysinit                               x86_64                        3.16.2.3-3.el6_6                                  updates                         44 k
 nss-tools                                 x86_64                        3.16.2.3-3.el6_6                                  updates                        427 k
 nss-util                                  x86_64                        3.16.2.3-2.el6_6                                  updates                         66 k
 openssl                                   x86_64                        1.0.1e-30.el6_6.7                                 updates                        1.5 M
 policycoreutils                           x86_64                        2.0.83-19.47.el6_6.1                              updates                        650 k
 rpm                                       x86_64                        4.8.0-38.el6_6                                    updates                        901 k
 rpm-libs                                  x86_64                        4.8.0-38.el6_6                                    updates                        313 k
 rpm-python                                x86_64                        4.8.0-38.el6_6                                    updates                         57 k
 tzdata                                    noarch                        2015b-1.el6                                       updates                        443 k

Transaction Summary
================================================================================================================================================================
Upgrade      23 Package(s)

Total download size: 27 M
Is this ok [y/N]: y
Downloading Packages:
(1/23): bind-libs-9.8.2-0.30.rc1.el6_6.2.x86_64.rpm                                                                                      | 884 kB     00:00     
(2/23): bind-utils-9.8.2-0.30.rc1.el6_6.2.x86_64.rpm                                                                                     | 185 kB     00:00     
(3/23): curl-7.19.7-40.el6_6.4.x86_64.rpm                                                                                                | 194 kB     00:00     
(4/23): cyrus-sasl-lib-2.1.23-15.el6_6.2.x86_64.rpm                                                                                      | 136 kB     00:00     
(5/23): glibc-2.12-1.149.el6_6.5.x86_64.rpm                                                                                              | 3.8 MB     00:01     
(6/23): glibc-common-2.12-1.149.el6_6.5.x86_64.rpm                                                                                       |  14 MB     00:19     
(7/23): initscripts-9.03.46-1.el6.centos.1.x86_64.rpm                                                                                    | 943 kB     00:00     
(8/23): iproute-2.6.32-33.el6_6.x86_64.rpm                                                                                               | 365 kB     00:00     
(9/23): libcurl-7.19.7-40.el6_6.4.x86_64.rpm                                                                                             | 166 kB     00:00     
(10/23): libssh2-1.4.2-1.el6_6.1.x86_64.rpm                                                                                              | 123 kB     00:00     
(11/23): libxml2-2.7.6-17.el6_6.1.x86_64.rpm                                                                                             | 801 kB     00:00     
(12/23): nss-3.16.2.3-3.el6_6.x86_64.rpm                                                                                                 | 834 kB     00:00     
(13/23): nss-softokn-3.14.3-22.el6_6.x86_64.rpm                                                                                          | 262 kB     00:00     
(14/23): nss-softokn-freebl-3.14.3-22.el6_6.x86_64.rpm                                                                                   | 167 kB     00:00     
(15/23): nss-sysinit-3.16.2.3-3.el6_6.x86_64.rpm                                                                                         |  44 kB     00:00     
(16/23): nss-tools-3.16.2.3-3.el6_6.x86_64.rpm                                                                                           | 427 kB     00:00     
(17/23): nss-util-3.16.2.3-2.el6_6.x86_64.rpm                                                                                            |  66 kB     00:00     
(18/23): openssl-1.0.1e-30.el6_6.7.x86_64.rpm                                                                                            | 1.5 MB     00:00     
(19/23): policycoreutils-2.0.83-19.47.el6_6.1.x86_64.rpm                                                                                 | 650 kB     00:00     
(20/23): rpm-4.8.0-38.el6_6.x86_64.rpm                                                                                                   | 901 kB     00:00     
(21/23): rpm-libs-4.8.0-38.el6_6.x86_64.rpm                                                                                              | 313 kB     00:00     
(22/23): rpm-python-4.8.0-38.el6_6.x86_64.rpm                                                                                            |  57 kB     00:00     
(23/23): tzdata-2015b-1.el6.noarch.rpm                                                                                                   | 443 kB     00:00     
----------------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                           1.0 MB/s |  27 MB     00:27     
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Importing GPG key 0xC105B9DE:
 Userid : CentOS-6 Key (CentOS 6 Official Signing Key) <centos-6-key@centos.org>
 Package: centos-release-6-6.el6.centos.12.2.x86_64 (@CentOS/$releasever)
 From   : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Is this ok [y/N]: y                
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
  Updating   : tzdata-2015b-1.el6.noarch                                                                                                                   1/46 
  Updating   : glibc-common-2.12-1.149.el6_6.5.x86_64                                                                                                      2/46 
  Updating   : glibc-2.12-1.149.el6_6.5.x86_64                                                                                                             3/46 
  Updating   : nss-softokn-freebl-3.14.3-22.el6_6.x86_64                                                                                                   4/46 
  Updating   : nss-util-3.16.2.3-2.el6_6.x86_64                                                                                                            5/46 
  Updating   : openssl-1.0.1e-30.el6_6.7.x86_64                                                                                                            6/46 
  Updating   : libssh2-1.4.2-1.el6_6.1.x86_64                                                                                                              7/46 
  Updating   : nss-softokn-3.14.3-22.el6_6.x86_64                                                                                                          8/46 
  Updating   : nss-sysinit-3.16.2.3-3.el6_6.x86_64                                                                                                         9/46 
  Updating   : nss-3.16.2.3-3.el6_6.x86_64                                                                                                                10/46 
  Updating   : libxml2-2.7.6-17.el6_6.1.x86_64                                                                                                            11/46 
  Updating   : 32:bind-libs-9.8.2-0.30.rc1.el6_6.2.x86_64                                                                                                 12/46 
  Updating   : libcurl-7.19.7-40.el6_6.4.x86_64                                                                                                           13/46 
  Updating   : curl-7.19.7-40.el6_6.4.x86_64                                                                                                              14/46 
  Updating   : rpm-4.8.0-38.el6_6.x86_64                                                                                                                  15/46 
  Updating   : rpm-libs-4.8.0-38.el6_6.x86_64                                                                                                             16/46 
  Updating   : iproute-2.6.32-33.el6_6.x86_64                                                                                                             17/46 
  Updating   : initscripts-9.03.46-1.el6.centos.1.x86_64                                                                                                  18/46 
  Updating   : policycoreutils-2.0.83-19.47.el6_6.1.x86_64                                                                                                19/46 
  Updating   : rpm-python-4.8.0-38.el6_6.x86_64                                                                                                           20/46 
  Updating   : 32:bind-utils-9.8.2-0.30.rc1.el6_6.2.x86_64                                                                                                21/46 
  Updating   : nss-tools-3.16.2.3-3.el6_6.x86_64                                                                                                          22/46 
  Updating   : cyrus-sasl-lib-2.1.23-15.el6_6.2.x86_64                                                                                                    23/46 
  Cleanup    : 32:bind-utils-9.8.2-0.30.rc1.el6.x86_64                                                                                                    24/46 
  Cleanup    : nss-tools-3.16.1-14.el6.x86_64                                                                                                             25/46 
  Cleanup    : rpm-python-4.8.0-37.el6.x86_64                                                                                                             26/46 
  Cleanup    : 32:bind-libs-9.8.2-0.30.rc1.el6.x86_64                                                                                                     27/46 
  Cleanup    : policycoreutils-2.0.83-19.47.el6.x86_64                                                                                                    28/46 
  Cleanup    : rpm-libs-4.8.0-37.el6.x86_64                                                                                                               29/46 
  Cleanup    : rpm-4.8.0-37.el6.x86_64                                                                                                                    30/46 
  Cleanup    : curl-7.19.7-37.el6_5.3.x86_64                                                                                                              31/46 
  Cleanup    : libcurl-7.19.7-37.el6_5.3.x86_64                                                                                                           32/46 
  Cleanup    : nss-sysinit-3.16.1-14.el6.x86_64                                                                                                           33/46 
  Cleanup    : nss-3.16.1-14.el6.x86_64                                                                                                                   34/46 
  Cleanup    : nss-softokn-3.14.3-17.el6.x86_64                                                                                                           35/46 
  Cleanup    : libssh2-1.4.2-1.el6.x86_64                                                                                                                 36/46 
  Cleanup    : initscripts-9.03.46-1.el6.centos.x86_64                                                                                                    37/46 
  Cleanup    : iproute-2.6.32-32.el6_5.x86_64                                                                                                             38/46 
  Cleanup    : openssl-1.0.1e-30.el6.x86_64                                                                                                               39/46 
  Cleanup    : nss-util-3.16.1-3.el6.x86_64                                                                                                               40/46 
  Cleanup    : libxml2-2.7.6-14.el6_5.2.x86_64                                                                                                            41/46 
  Cleanup    : cyrus-sasl-lib-2.1.23-15.el6.x86_64                                                                                                        42/46 
  Cleanup    : glibc-common-2.12-1.149.el6.x86_64                                                                                                         43/46 
  Cleanup    : nss-softokn-freebl-3.14.3-17.el6.x86_64                                                                                                    44/46 
  Cleanup    : glibc-2.12-1.149.el6.x86_64                                                                                                                45/46 
  Cleanup    : tzdata-2014g-1.el6.noarch                                                                                                                  46/46 
  Verifying  : nss-util-3.16.2.3-2.el6_6.x86_64                                                                                                            1/46 
  Verifying  : libcurl-7.19.7-40.el6_6.4.x86_64                                                                                                            2/46 
  Verifying  : openssl-1.0.1e-30.el6_6.7.x86_64                                                                                                            3/46 
  Verifying  : curl-7.19.7-40.el6_6.4.x86_64                                                                                                               4/46 
  Verifying  : libxml2-2.7.6-17.el6_6.1.x86_64                                                                                                             5/46 
  Verifying  : nss-sysinit-3.16.2.3-3.el6_6.x86_64                                                                                                         6/46 
  Verifying  : nss-tools-3.16.2.3-3.el6_6.x86_64                                                                                                           7/46 
  Verifying  : nss-softokn-3.14.3-22.el6_6.x86_64                                                                                                          8/46 
  Verifying  : nss-softokn-freebl-3.14.3-22.el6_6.x86_64                                                                                                   9/46 
  Verifying  : policycoreutils-2.0.83-19.47.el6_6.1.x86_64                                                                                                10/46 
  Verifying  : initscripts-9.03.46-1.el6.centos.1.x86_64                                                                                                  11/46 
  Verifying  : 32:bind-utils-9.8.2-0.30.rc1.el6_6.2.x86_64                                                                                                12/46 
  Verifying  : glibc-common-2.12-1.149.el6_6.5.x86_64                                                                                                     13/46 
  Verifying  : rpm-python-4.8.0-38.el6_6.x86_64                                                                                                           14/46 
  Verifying  : rpm-4.8.0-38.el6_6.x86_64                                                                                                                  15/46 
  Verifying  : rpm-libs-4.8.0-38.el6_6.x86_64                                                                                                             16/46 
  Verifying  : iproute-2.6.32-33.el6_6.x86_64                                                                                                             17/46 
  Verifying  : libssh2-1.4.2-1.el6_6.1.x86_64                                                                                                             18/46 
  Verifying  : cyrus-sasl-lib-2.1.23-15.el6_6.2.x86_64                                                                                                    19/46 
  Verifying  : glibc-2.12-1.149.el6_6.5.x86_64                                                                                                            20/46 
  Verifying  : nss-3.16.2.3-3.el6_6.x86_64                                                                                                                21/46 
  Verifying  : tzdata-2015b-1.el6.noarch                                                                                                                  22/46 
  Verifying  : 32:bind-libs-9.8.2-0.30.rc1.el6_6.2.x86_64                                                                                                 23/46 
  Verifying  : curl-7.19.7-37.el6_5.3.x86_64                                                                                                              24/46 
  Verifying  : nss-sysinit-3.16.1-14.el6.x86_64                                                                                                           25/46 
  Verifying  : iproute-2.6.32-32.el6_5.x86_64                                                                                                             26/46 
  Verifying  : 32:bind-utils-9.8.2-0.30.rc1.el6.x86_64                                                                                                    27/46 
  Verifying  : rpm-python-4.8.0-37.el6.x86_64                                                                                                             28/46 
  Verifying  : glibc-2.12-1.149.el6.x86_64                                                                                                                29/46 
  Verifying  : libssh2-1.4.2-1.el6.x86_64                                                                                                                 30/46 
  Verifying  : libxml2-2.7.6-14.el6_5.2.x86_64                                                                                                            31/46 
  Verifying  : openssl-1.0.1e-30.el6.x86_64                                                                                                               32/46 
  Verifying  : initscripts-9.03.46-1.el6.centos.x86_64                                                                                                    33/46 
  Verifying  : 32:bind-libs-9.8.2-0.30.rc1.el6.x86_64                                                                                                     34/46 
  Verifying  : tzdata-2014g-1.el6.noarch                                                                                                                  35/46 
  Verifying  : nss-3.16.1-14.el6.x86_64                                                                                                                   36/46 
  Verifying  : nss-tools-3.16.1-14.el6.x86_64                                                                                                             37/46 
  Verifying  : nss-softokn-freebl-3.14.3-17.el6.x86_64                                                                                                    38/46 
  Verifying  : nss-softokn-3.14.3-17.el6.x86_64                                                                                                           39/46 
  Verifying  : rpm-libs-4.8.0-37.el6.x86_64                                                                                                               40/46 
  Verifying  : rpm-4.8.0-37.el6.x86_64                                                                                                                    41/46 
  Verifying  : policycoreutils-2.0.83-19.47.el6.x86_64                                                                                                    42/46 
  Verifying  : libcurl-7.19.7-37.el6_5.3.x86_64                                                                                                           43/46 
  Verifying  : glibc-common-2.12-1.149.el6.x86_64                                                                                                         44/46 
  Verifying  : nss-util-3.16.1-3.el6.x86_64                                                                                                               45/46 
  Verifying  : cyrus-sasl-lib-2.1.23-15.el6.x86_64                                                                                                        46/46 

Updated:
  bind-libs.x86_64 32:9.8.2-0.30.rc1.el6_6.2             bind-utils.x86_64 32:9.8.2-0.30.rc1.el6_6.2          curl.x86_64 0:7.19.7-40.el6_6.4                  
  cyrus-sasl-lib.x86_64 0:2.1.23-15.el6_6.2              glibc.x86_64 0:2.12-1.149.el6_6.5                    glibc-common.x86_64 0:2.12-1.149.el6_6.5         
  initscripts.x86_64 0:9.03.46-1.el6.centos.1            iproute.x86_64 0:2.6.32-33.el6_6                     libcurl.x86_64 0:7.19.7-40.el6_6.4               
  libssh2.x86_64 0:1.4.2-1.el6_6.1                       libxml2.x86_64 0:2.7.6-17.el6_6.1                    nss.x86_64 0:3.16.2.3-3.el6_6                    
  nss-softokn.x86_64 0:3.14.3-22.el6_6                   nss-softokn-freebl.x86_64 0:3.14.3-22.el6_6          nss-sysinit.x86_64 0:3.16.2.3-3.el6_6            
  nss-tools.x86_64 0:3.16.2.3-3.el6_6                    nss-util.x86_64 0:3.16.2.3-2.el6_6                   openssl.x86_64 0:1.0.1e-30.el6_6.7               
  policycoreutils.x86_64 0:2.0.83-19.47.el6_6.1          rpm.x86_64 0:4.8.0-38.el6_6                          rpm-libs.x86_64 0:4.8.0-38.el6_6                 
  rpm-python.x86_64 0:4.8.0-38.el6_6                     tzdata.noarch 0:2015b-1.el6                         

Complete!
```

これを`centos:6.6`としてコミット

```bash
$ docker ps -a
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
d8220aff7114        centos:6.6          "bash"              25 minutes ago      Exited (0) 7 seconds ago                       goofy_payne         
$ docker commit d8220aff7114 centos:6.6
c91ccb3a5151cbb3a594bf3d9316bf164d04cff0da26a1adc109132c3a7d9964
$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
centos              6.6                 c91ccb3a5151        9 seconds ago       403.3 MB
```