git install fails in Dockerfile

Solution 1:

You are overanalyzing this. It's just a simple typo. Should be:

RUN apt-get update && \
    apt-get upgrade -y && \
    apt-get install -y git

Those are 3 separate commands.

Solution 2:

Some thoughts:

• 1. Replace apt-get install git with apt-get install --assume-yes git. Without the --assume-yes it will prompt you for confirmation, which you are unable to give and it will be smart enough to figure that out and assume you meant "NO".
• 2. You added the ssh key, but did you confirm it was 0600. I would just copy it and specifically chmod 0600 ~/.ssh/id_rsa to be sure.

Overall, your Dockerfile looks very clever and I got some fresh ideas from reading it.