Copying local git config into docker container

Question

I'm using both docker and docker-compose to host what for the most part is a LAMP stack. I'd like to be able to use git inside one of my containers without it asking for my user.email and user.name on push after I build. Along with other things such as my push.default and branch settings. Is there any good way to have docker or docker-compose copy the results of git config --list to a file in the container, which I can then use with my entrypoint to setup the git config.

Answer 1

Is there any good way to have docker or docker-compose copy the results of git config --list to a file in the container, which I can then use with my entrypoint to setup the git config.

You really needn't do that to reach your aims, there is a outbox solution:

For your host machine which run git, all the contents of git config --list is stored in files:

• If use git config --system to configure them, they are stored in /etc/gitconfig
• If use git config --global to configure them, they are stored in ~/.gitconfig

So, you just need to mount the files to containers, then can reuse the git configure on host machine.

Something like follows, FYI.

• If host use --global to configure git:

  docker run --rm -it -v ~/.gitconfig:/etc/gitconfig your_image_with_git git config --list
  

  output: user.name=xxx

• If host use --system to configure git:

  docker run --rm -it -v /etc/gitconfig:/etc/gitconfig your_image_with_git git config --list
  

  output: user.name=yyy

For docker-compose, you can just configure volumes to define the mount.