Docker for WindowsでSSL検証環境を構築する

#背景
Docker for Windowsを用いてローカルにLAMP環境を構築したのですが、SSLを用いたセキュアな通信での検証ができませんでした。
SSL通信が前提のサイトが増えてきたため、SSLに対応した検証環境が必要となりました。
以前構築した環境をベースにして、SSLに対応したローカルでの環境構築を行います。

#前提条件
- Docker for WindowsでDockerが構築されている https://qiita.com/dai-andy1976/items/24228211f2bb1a4cd09e
- Windows10にChocolateyがインストールされている https://qiita.com/dai-andy1976/items/6a47bb36932aa1d5af2d
- Windows10にmkcertがインストールされている https://qiita.com/dai-andy1976/items/b179ef6e56087ad1943d

#準備
「Docker for WindowsでLAMP環境（Laravel動作環境）を構築する」で作成したディレクトリをコピーします。
Windows PowerShell(管理者)を起動してコマンドを実行します。

```
PS C:\> cp -r C:\Docker\Gauth C:\Docker\Gauth_ssl
```

コピーしたディレクトリに移動します。

```
PS C:\> cd C:\Docker\Gauth_ssl
```

#環境構築
SSLに対応したローカル環境構築を行います。

##「ssl-conf」ディレクトリ作成
「ssl-conf」ディレクトリを作成します。

```
PS C:\Docker\Gauth_ssl> mkdir ssl-conf
```

##docker-compose.ymlの内容変更

念のため、docker-compose.ymlの変更前ファイルを残しておきます。

```
PS C:\Docker\Gauth_ssl> cp .\docker-compose.yml .\docker-compose_2.yml
```

docker-compose.ymlファイルに追記します。
services:web:ports:に「443:443」を追加します。

```docker-compose.yml
version: "3"
services:
  web:
    build:
      context: ./apache-php
    ports:
      - 80:80
      - 443:443
    privileged: true
    links:
      - db
    volumes:
      - "./g-auth/:/var/www/html"
      - "./apache-php/apache.conf:/etc/httpd/conf/httpd.conf"
    container_name: "apache-php"
  db:
    build: ./mysql
    ports:
      - 3307:3306
    environment:
      MYSQL_ROOT_PASSWORD: root
      TZ: Asia/Tokyo
    volumes:
      - ./mysql/mysql_data:/var/lib/mysql
    container_name: "mysql5.7"
  phpmyadmin:
    image: phpmyadmin/phpmyadmin:latest
    links:
      - db
    ports:
      - 8080:80
    environment:
      - PMA_ARBITRARY=1
      - PMA_HOST=db
    container_name: "phpmyamin-la"
```

##Dockerfileの変容変更

apache-phpに移動します。

```
PS C:\Docker\Gauth_ssl> cd .\apache-php\
```

Dockerfileに「RUN yum -y install mod_ssl openssl」を追加します。

```:Dockerfile
FROM centos:7.4.1708

RUN yum -y update

# 言語を日本語に設定
RUN localedef -i ja_JP -f UTF-8 ja_JP.UTF-8
RUN echo 'LANG="ja_JP.UTF-8"' >  /etc/locale.conf
ENV LANG ja_JP.UTF-8

# 日付を日本語に設定
RUN echo 'ZONE="Asia/Tokyo"' > /etc/sysconfig/clock
RUN rm -f /etc/localtime
RUN ln -fs /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

# 外部リポジトリ（EPEL, Remi）を追加
RUN yum -y install epel-release
RUN yum -y install http://rpms.remirepo.net/enterprise/remi-release-7.rpm

# apache その他 phpパッケージを導入
RUN yum -y install httpd
RUN yum -y install --enablerepo=remi,remi-php71 php php-cli php-common php-devel php-fpm php-gd php-mbstring php-mysqlnd php-pdo php-pear php-pecl-apcu php-soap php-xml php-xmlrpc
RUN yum -y install zip unzip
RUN yum -y install mod_ssl openssl

# composerのインストール
RUN curl -sS https://getcomposer.org/installer | php
RUN mv composer.phar /usr/local/bin/composer

CMD ["/usr/sbin/httpd","-D","FOREGROUND"]

WORKDIR /var/www/html
```

##ビルド

Gauth_sslディレクトリに戻ります。

```
PS C:\Docker\Gauth_ssl\apache-php> cd ..
```

ビルドします。

```
PS C:\Docker\Gauth_ssl> docker-compose build
```

##コンテナ起動

コンテナを起動します。

```
PS C:\Docker\Gauth_ssl> docker-compose up -d
```

##ssl.conf をコピー
コンテナ内に入ってコマンドを実行します。

```
PS C:\Docker\Gauth_ssl> docker-compose exec web bash
[root@c175c0b20bd1 html]# cat /etc/httpd/conf.d/ssl.conf > /var/www/html/ssl.conf
[root@c175c0b20bd1 html]# exit
exit
```

##サーバー証明書の発行

プロジェクト（g-auth）のディレクトリに移動します。

```
PS C:\Docker\Gauth_ssl> cd .\g-auth\
```

localhostのサーバー証明書を発行します。

```
PS C:\Docker\Gauth_ssl\g-auth> mkcert localhost
```

##ssl.confの移動

ssl.confファイルをssl-confディレクトリへ移動します。

```
PS C:\Docker\Gauth_ssl\g-auth> mv .\ssl.conf ..\ssl-conf\
```

##ssl.confの内容変更

ssl.confファイルを一部変更します。
- SSLCertificateFile /etc/pki/tls/certs/localhost.crt ⇒ SSLCertificateFile /var/www/html/localhost.pem
- SSLCertificateKeyFile /etc/pki/tls/private/localhost.key ⇒ SSLCertificateKeyFile /var/www/html/localhost-key.pem

```ssl.conf
#
# When we also provide SSL we have to listen to the 
# the HTTPS port in addition.
#
Listen 443 https

##
##  SSL Global Context
##
##  All SSL configuration in this context applies both to
##  the main server and all SSL-enabled virtual hosts.
##

#   Pass Phrase Dialog:
#   Configure the pass phrase gathering process.
#   The filtering dialog program (`builtin' is a internal
#   terminal dialog) has to provide the pass phrase on stdout.
SSLPassPhraseDialog exec:/usr/libexec/httpd-ssl-pass-dialog

#   Inter-Process Session Cache:
#   Configure the SSL Session Cache: First the mechanism 
#   to use and second the expiring timeout (in seconds).
SSLSessionCache         shmcb:/run/httpd/sslcache(512000)
SSLSessionCacheTimeout  300

#   Pseudo Random Number Generator (PRNG):
#   Configure one or more sources to seed the PRNG of the 
#   SSL library. The seed data should be of good random quality.
#   WARNING! On some platforms /dev/random blocks if not enough entropy
#   is available. This means you then cannot use the /dev/random device
#   because it would lead to very long connection times (as long as
#   it requires to make more entropy available). But usually those
#   platforms additionally provide a /dev/urandom device which doesn't
#   block. So, if available, use this one instead. Read the mod_ssl User
#   Manual for more details.
SSLRandomSeed startup file:/dev/urandom  256
SSLRandomSeed connect builtin
#SSLRandomSeed startup file:/dev/random  512
#SSLRandomSeed connect file:/dev/random  512
#SSLRandomSeed connect file:/dev/urandom 512

#
# Use "SSLCryptoDevice" to enable any supported hardware
# accelerators. Use "openssl engine -v" to list supported
# engine names.  NOTE: If you enable an accelerator and the
# server does not start, consult the error logs and ensure
# your accelerator is functioning properly. 
#
SSLCryptoDevice builtin
#SSLCryptoDevice ubsec

##
## SSL Virtual Host Context
##

<VirtualHost _default_:443>

# General setup for the virtual host, inherited from global configuration
#DocumentRoot "/var/www/html"
#ServerName www.example.com:443

# Use separate log files for the SSL virtual host; note that LogLevel
# is not inherited from httpd.conf.
ErrorLog logs/ssl_error_log
TransferLog logs/ssl_access_log
LogLevel warn

#   SSL Engine Switch:
#   Enable/Disable SSL for this virtual host.
SSLEngine on

#   SSL Protocol support:
# List the enable protocol levels with which clients will be able to
# connect.  Disable SSLv2 access by default:
SSLProtocol all -SSLv2 -SSLv3

#   SSL Cipher Suite:
#   List the ciphers that the client is permitted to negotiate.
#   See the mod_ssl documentation for a complete list.
SSLCipherSuite HIGH:3DES:!aNULL:!MD5:!SEED:!IDEA

#   Speed-optimized SSL Cipher configuration:
#   If speed is your main concern (on busy HTTPS servers e.g.),
#   you might want to force clients to specific, performance
#   optimized ciphers. In this case, prepend those ciphers
#   to the SSLCipherSuite list, and enable SSLHonorCipherOrder.
#   Caveat: by giving precedence to RC4-SHA and AES128-SHA
#   (as in the example below), most connections will no longer
#   have perfect forward secrecy - if the server's key is
#   compromised, captures of past or future traffic must be
#   considered compromised, too.
#SSLCipherSuite RC4-SHA:AES128-SHA:HIGH:MEDIUM:!aNULL:!MD5
#SSLHonorCipherOrder on 

#   Server Certificate:
# Point SSLCertificateFile at a PEM encoded certificate.  If
# the certificate is encrypted, then you will be prompted for a
# pass phrase.  Note that a kill -HUP will prompt again.  A new
# certificate can be generated using the genkey(1) command.
#SSLCertificateFile /etc/pki/tls/certs/localhost.crt
SSLCertificateFile /var/www/html/localhost.pem

#   Server Private Key:
#   If the key is not combined with the certificate, use this
#   directive to point at the key file.  Keep in mind that if
#   you've both a RSA and a DSA private key you can configure
#   both in parallel (to also allow the use of DSA ciphers, etc.)
#SSLCertificateKeyFile /etc/pki/tls/private/localhost.key
SSLCertificateKeyFile /var/www/html/localhost-key.pem

#   Server Certificate Chain:
#   Point SSLCertificateChainFile at a file containing the
#   concatenation of PEM encoded CA certificates which form the
#   certificate chain for the server certificate. Alternatively
#   the referenced file can be the same as SSLCertificateFile
#   when the CA certificates are directly appended to the server
#   certificate for convinience.
#SSLCertificateChainFile /etc/pki/tls/certs/server-chain.crt

#   Certificate Authority (CA):
#   Set the CA certificate verification path where to find CA
#   certificates for client authentication or alternatively one
#   huge file containing all of them (file must be PEM encoded)
#SSLCACertificateFile /etc/pki/tls/certs/ca-bundle.crt

#   Client Authentication (Type):
#   Client certificate verification type and depth.  Types are
#   none, optional, require and optional_no_ca.  Depth is a
#   number which specifies how deeply to verify the certificate
#   issuer chain before deciding the certificate is not valid.
#SSLVerifyClient require
#SSLVerifyDepth  10

#   Access Control:
#   With SSLRequire you can do per-directory access control based
#   on arbitrary complex boolean expressions containing server
#   variable checks and other lookup directives.  The syntax is a
#   mixture between C and Perl.  See the mod_ssl documentation
#   for more details.
#<Location />
#SSLRequire (    %{SSL_CIPHER} !~ m/^(EXP|NULL)/ \
#            and %{SSL_CLIENT_S_DN_O} eq "Snake Oil, Ltd." \
#            and %{SSL_CLIENT_S_DN_OU} in {"Staff", "CA", "Dev"} \
#            and %{TIME_WDAY} >= 1 and %{TIME_WDAY} <= 5 \
#            and %{TIME_HOUR} >= 8 and %{TIME_HOUR} <= 20       ) \
#           or %{REMOTE_ADDR} =~ m/^192\.76\.162\.[0-9]+$/
#</Location>

#   SSL Engine Options:
#   Set various options for the SSL engine.
#   o FakeBasicAuth:
#     Translate the client X.509 into a Basic Authorisation.  This means that
#     the standard Auth/DBMAuth methods can be used for access control.  The
#     user name is the `one line' version of the client's X.509 certificate.
#     Note that no password is obtained from the user. Every entry in the user
#     file needs this password: `xxj31ZMTZzkVA'.
#   o ExportCertData:
#     This exports two additional environment variables: SSL_CLIENT_CERT and
#     SSL_SERVER_CERT. These contain the PEM-encoded certificates of the
#     server (always existing) and the client (only existing when client
#     authentication is used). This can be used to import the certificates
#     into CGI scripts.
#   o StdEnvVars:
#     This exports the standard SSL/TLS related `SSL_*' environment variables.
#     Per default this exportation is switched off for performance reasons,
#     because the extraction step is an expensive operation and is usually
#     useless for serving static content. So one usually enables the
#     exportation for CGI and SSI requests only.
#   o StrictRequire:
#     This denies access when "SSLRequireSSL" or "SSLRequire" applied even
#     under a "Satisfy any" situation, i.e. when it applies access is denied
#     and no other module can change it.
#   o OptRenegotiate:
#     This enables optimized SSL connection renegotiation handling when SSL
#     directives are used in per-directory context. 
#SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire
<Files ~ "\.(cgi|shtml|phtml|php3?)$">
    SSLOptions +StdEnvVars
</Files>
<Directory "/var/www/cgi-bin">
    SSLOptions +StdEnvVars
</Directory>

#   SSL Protocol Adjustments:
#   The safe and default but still SSL/TLS standard compliant shutdown
#   approach is that mod_ssl sends the close notify alert but doesn't wait for
#   the close notify alert from client. When you need a different shutdown
#   approach you can use one of the following variables:
#   o ssl-unclean-shutdown:
#     This forces an unclean shutdown when the connection is closed, i.e. no
#     SSL close notify alert is send or allowed to received.  This violates
#     the SSL/TLS standard but is needed for some brain-dead browsers. Use
#     this when you receive I/O errors because of the standard approach where
#     mod_ssl sends the close notify alert.
#   o ssl-accurate-shutdown:
#     This forces an accurate shutdown when the connection is closed, i.e. a
#     SSL close notify alert is send and mod_ssl waits for the close notify
#     alert of the client. This is 100% SSL/TLS standard compliant, but in
#     practice often causes hanging connections with brain-dead browsers. Use
#     this only for browsers where you know that their SSL implementation
#     works correctly. 
#   Notice: Most problems of broken clients are also related to the HTTP
#   keep-alive facility, so you usually additionally want to disable
#   keep-alive for those clients, too. Use variable "nokeepalive" for this.
#   Similarly, one has to force some clients to use HTTP/1.0 to workaround
#   their broken HTTP/1.1 implementation. Use variables "downgrade-1.0" and
#   "force-response-1.0" for this.
BrowserMatch "MSIE [2-5]" \
         nokeepalive ssl-unclean-shutdown \
         downgrade-1.0 force-response-1.0

#   Per-Server Logging:
#   The home of a custom SSL log file. Use this when you want a
#   compact non-error SSL logfile on a virtual host basis.
CustomLog logs/ssl_request_log \
          "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"

</VirtualHost>                                  
```

##docker-compose.ymlの内容変更（２）

Gauth_sslディレクトリに戻ります。

```
PS C:\Docker\Gauth_ssl\g-auth> cd ..
```

念のため、docker-compose.ymlの変更前ファイルを残しておきます。

```
PS C:\Docker\Gauth_ssl> cp .\docker-compose.yml .\docker-compose_3.yml
```

docker-compose.ymlファイルに追記します。
services:web:volumes:に「"./ssl-conf/ssl.conf:/etc/httpd/conf.d/ssl.conf"」を追加します。

```docker-compose.yml
version: "3"
services:
  web:
    build:
      context: ./apache-php
    ports:
      - 80:80
      - 443:443
    privileged: true
    links:
      - db
    volumes:
      - "./g-auth/:/var/www/html"
      - "./apache-php/apache.conf:/etc/httpd/conf/httpd.conf"
      - "./ssl-conf/ssl.conf:/etc/httpd/conf.d/ssl.conf"
    container_name: "apache-php"
  db:
    build: ./mysql
    ports:
      - 3307:3306
    environment:
      MYSQL_ROOT_PASSWORD: root
      TZ: Asia/Tokyo
    volumes:
      - ./mysql/mysql_data:/var/lib/mysql
    container_name: "mysql5.7"
  phpmyadmin:
    image: phpmyadmin/phpmyadmin:latest
    links:
      - db
    ports:
      - 8080:80
    environment:
      - PMA_ARBITRARY=1
      - PMA_HOST=db
    container_name: "phpmyamin-la"
```

##コンテナ起動（２）

プロジェクト（g-auth）のディレクトリに移動します。

```
PS C:\Docker\Gauth_ssl> cd .\g-auth\
```

コンテナを起動します。

```
PS C:\Docker\Gauth_ssl\g-auth> docker-compose up -d
```

##ブラウザで確認

- 通常アクセス http://localhost で画面表示を確認します。

|![全画面キャプチャ 20200624 110736.jpg](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/626832/b167de7d-c0f6-1f83-d9b5-aeaf8e9b0a45.jpeg)|
|:--|

- SSLアクセス https://localhost で画面表示を確認します。

|![全画面キャプチャ 20200624 110826.jpg](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/626832/1f5b76e9-8ce8-d5e1-1570-24cf7eeab48e.jpeg)|
|:--|

お疲れ様でした。