【Docker】コンテナ内でgit commitする際のエラー

docker composeコンテナ内でcommitしようとすると以下のようになりました。
```
root@69c25a1648e3:/myapp# git commit -v
Author identity unknown

*** Please tell me who you are.

Run

  git config --global user.email "you@example.com"
  git config --global user.name "Your Name"

to set your account's default identity.
Omit --global to set the identity only in this repository.

fatal: unable to auto-detect email address (got 'root@69c25a1648e3.(none)')
```
この場合はエラーメッセージに従っていかのようにすればOKです。
```
root@69c25a1648e3:/myapp# git config --global user.email "myemail@example.com"
root@69c25a1648e3:/myapp# git config --global user.name "me"
```
その次にcommitしようとするとまたまたエラーが出ました。
```
root@69c25a1648e3:/myapp# git commit -v
hint: Waiting for your editor to close the file... error: cannot run editor: No such file or directory
error: unable to start editor 'editor'
Please supply the message using either -m or -F option.
```
vimを使えるようにするために以下のようにすればOKです(`apt-get update`、`apt-get install vim`)。
VSCodeでコミットメッセージ書きたい場合はまた別のやり方があります。
```
root@69c25a1648e3:/myapp# apt-get update
Get:1 http://deb.debian.org/debian bullseye InRelease [116 kB]
Get:2 http://deb.debian.org/debian-security bullseye-security InRelease [48.4 kB]
Get:3 http://deb.debian.org/debian bullseye-updates InRelease [44.1 kB]
Get:4 http://deb.debian.org/debian bullseye/main amd64 Packages [8062 kB]
Get:5 http://deb.debian.org/debian-security bullseye-security/main amd64 Packages [264 kB]
Get:6 http://deb.debian.org/debian bullseye-updates/main amd64 Packages [18.8 kB]
Fetched 8554 kB in 3s (2655 kB/s)                           
Reading package lists... Done
root@69c25a1648e3:/myapp# apt-get install vim
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  libgpm2 vim-common vim-runtime xxd
Suggested packages:
  gpm ctags vim-doc vim-scripts
The following NEW packages will be installed:
  libgpm2 vim vim-common vim-runtime xxd
0 upgraded, 5 newly installed, 0 to remove and 67 not upgraded.
Need to get 8174 kB of archives.
After this operation, 36.9 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://deb.debian.org/debian bullseye/main amd64 xxd amd64 2:8.2.2434-3+deb11u1 [192 kB]
Get:2 http://deb.debian.org/debian bullseye/main amd64 vim-common all 2:8.2.2434-3+deb11u1 [226 kB]
Get:3 http://deb.debian.org/debian bullseye/main amd64 libgpm2 amd64 1.20.7-8 [35.6 kB]
Get:4 http://deb.debian.org/debian bullseye/main amd64 vim-runtime all 2:8.2.2434-3+deb11u1 [6226 kB]
Get:5 http://deb.debian.org/debian bullseye/main amd64 vim amd64 2:8.2.2434-3+deb11u1 [1494 kB]
Fetched 8174 kB in 0s (17.5 MB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package xxd.
(Reading database ... 23169 files and directories currently installed.)
Preparing to unpack .../xxd_2%3a8.2.2434-3+deb11u1_amd64.deb ...
Unpacking xxd (2:8.2.2434-3+deb11u1) ...
Selecting previously unselected package vim-common.
Preparing to unpack .../vim-common_2%3a8.2.2434-3+deb11u1_all.deb ...
Unpacking vim-common (2:8.2.2434-3+deb11u1) ...
Selecting previously unselected package libgpm2:amd64.
Preparing to unpack .../libgpm2_1.20.7-8_amd64.deb ...
Unpacking libgpm2:amd64 (1.20.7-8) ...
Selecting previously unselected package vim-runtime.
Preparing to unpack .../vim-runtime_2%3a8.2.2434-3+deb11u1_all.deb ...
Adding 'diversion of /usr/share/vim/vim82/doc/help.txt to /usr/share/vim/vim82/doc/help.txt.vim-tiny by vim-runtime'
Adding 'diversion of /usr/share/vim/vim82/doc/tags to /usr/share/vim/vim82/doc/tags.vim-tiny by vim-runtime'
Unpacking vim-runtime (2:8.2.2434-3+deb11u1) ...
Selecting previously unselected package vim.
Preparing to unpack .../vim_2%3a8.2.2434-3+deb11u1_amd64.deb ...
Unpacking vim (2:8.2.2434-3+deb11u1) ...
Setting up libgpm2:amd64 (1.20.7-8) ...
Setting up xxd (2:8.2.2434-3+deb11u1) ...
Setting up vim-common (2:8.2.2434-3+deb11u1) ...
Setting up vim-runtime (2:8.2.2434-3+deb11u1) ...
Setting up vim (2:8.2.2434-3+deb11u1) ...
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/vim (vim) in auto mode
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/vimdiff (vimdiff) in auto mode
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/rvim (rvim) in auto mode
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/rview (rview) in auto mode
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/vi (vi) in auto mode
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/view (view) in auto mode
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/ex (ex) in auto mode
update-alternatives: using /usr/bin/vim.basic to provide /usr/bin/editor (editor) in auto mode
Processing triggers for libc-bin (2.31-13+deb11u5) ...
Processing triggers for hicolor-icon-theme (0.17-2) ...
```

### 参考
- [Docker — docker コンテナの中で vim が使えない場合 #初心者 - Qiita](https://qiita.com/YumaInaura/items/3432cc3f8a8553e05a6e)