waynemystir / docker-ubuntu-ssh-setup

Setup SSH keys in a Docker Ubuntu container

Instructions

This image and container give the user the ability to create and use SSH keys as a client. The instructions below also show how to add the SSH key that is created by this container to your GitHub's collection of SSH keys.

To modify this for your needs, you need to make a couple of changes. First you need to change the user that will be used in the container. To do this, you can either

1. Open Dockerfile and change ARG uname=wayne to ARG uname=yourusername, where yourusername is your username on your host machine.
2. Open bar.sh and add --build-arg uname=yourusername to line 15 in the docker build command.

You can also open entrypoint.sh and modify the values for SSH_PASSPHRASE and SSH_COMMENT if you like.

To build the image and run the container, run this command:

bash bar.sh

When this completes running, you should be at the command line inside the container. And you should be in the home directory (i.e. $HOME should be /home/yourusername-on-host). Your private key id_rsa and public key id_rsa.pub should be in the folder $HOME/.ssh.

Add to your GitHub account

From that point, you can run this

vi .ssh/id_rsa.pub

Then highlight all of the content in that file and press ctrl-shift-c. Then follow the instructions in step 2 from this page. Now you should be able to interact with your GitHub account from this container as you normally would from your host. For instance, the file git-clone.sh has an example that you can modify.