A minimal GIT server.
git clone https://github.com/unixtastic/git-ssh-server
docker build -t 'unixtastic/git-ssh-server' .
To run this first create a data directory on your docker host to hold git data, ssh authentication, and possibly git-shell-commands.
mkdir /docker_data/git
Run the container.
docker run -d -p 2222:22 -v /docker_data/git:/git unixtastic/git-ssh-server
You may substitute '2222' with any port number of your choosing.
Setup SSH:
cd /docker_data/git
mkdir .ssh
chown -R 987:987 .ssh
chmod -R 700 .ssh
touch .ssh/authorized_keys
Add user public keys to .ssh/authorized_keys just like you would do for 'normal' SSH.
touch /docker_data/git/.hushlogin to prevent login banners that can confuse git.
mkdir /docker_data/git/mynewproject.git
cd /docker_data/git/mynewproject.git
git --bare init
chown -R 987:987 .
Clone the repo from a client:
git clone ssh://git@myserver:2222/git/mynewproject.git
mkdir /docker_data/git/git-shell-commands
chown 987:987 /docker_data/git/git-shell-commands
chmod 700 /docker_data/git/git-shell-commands
Add your commands to the above directory. You might want to start with list, which
you can find under /usr/share/doc on most git client machines.
The SSH host keys are generated at the first run of each new container. This will confuse some git clients and really should be changed.