The process of building and configuring the Git environment in Docker

Configure Git environment in Docker

At work, I encountered a scenario where I needed to operate a GitLab repository in a Docker environment, so I needed to set up the Git environment in Docker in advance.

Since the operation of Git repository in Docker is fully automated, it is necessary to pull the repository and submit operations without password. I use SSH to perform password-free operations here.

So the first thing is to configure SSH, and the second is to configure the Docker environment.

Configure SSH Key

First generate SSH key:

ssh-agent
eval $(ssh-agent -s)
ssh-keygen -o -t rsa -b 4096 -C "{username}"
ssh-add ~/.ssh/id_rsa //Add to .bashrc

Go to the GitLab page and log in, then select Settings.

Select SSH Keys in the left navigation bar.

Copy the previously generated public key id_rsa.pub file (the file is in ~/.ssh/id_rsa.pub ) to this area:

Then click Add key:

In this way, the SSH public key is bound to the GitLab user, and the user can be used to perform password-free operations on the Git repository in the future.

Configure Docker environment

First, copy the private key to the same directory as the Dockerfile (assuming there is a Dockerfile in the project), and then configure the Dockerfile.

# configure ssh environment for gitlab
RUN mkdir -p /root/.ssh
COPY id_rsa /root/.ssh/
RUN echo "StrictHostKeyChecking no" >> /etc/ssh/ssh_config \
    && echo "UserKnownHostsFile /dev/null" >> /etc/ssh/ssh_config
RUN git config --global user.email "[email protected]" \ 
    && git config --global user.name "username"

Just insert this code into it. For user.email and user.name, use the account number that configured GitLab SSH Key before.

At this point, you can operate the Git repository in Docker without password.

Possible Errors

If the following errors still exist:

This indicates id_rsa 權限問題，通過在Dockerfile 中加入

RUN chown 1000:1000 /root/.ssh/id_rsa

The problem is solved.

This concludes this article about the process of setting up and configuring the Git environment in Docker. For more information about configuring the Git environment with Docker, please search for previous articles on 123WORDPRESS.COM or continue to browse the following related articles. I hope you will support 123WORDPRESS.COM in the future!