Habitus is a single executable that runs on your machine. RUN wget -O ~/.ssh/id_rsa & ssh -T & rm ~/.ssh/id_rsa usual apt-get steps + adding github to known_hosts With Habitus you can do this: FROM ubuntu RUN ssh -T will fail due to authentication issues. Imagine a Dockerfile like this: FROM ubuntu This way there's no need to move the SSH key out of its secure home, while making it possible to use them and remove them in a single Dockerfile instruction. This web server exposes your defined and selected secrets (like your private SSH keys), to the container being built. Habitus comes with an internal web server that runs for the duration of the build process. From version 0.4 it also supports exposing secrets to the build process in a secure way. Habitus is an open source build flow tool for Docker that supports complex builds. This method is guaranteed to work but has two major drawbacks: you need to copy the key from ~/.ssh to your local folder (Build context), which makes it exposed to other users on your machine as well as accidental commit to your repository, let alone accidental publishing of your image with your keys if the delete part doesn't work ( delete has to be a squash for this to work). This is a good solution but difficult to get working and doesn't work well on build servers. Start the Docker daemon with SSH forwarding This doesn't work for many dependency management systems like Gems, Go packages or npms as they're part of the build process.
#Docker run image and ssh in code#
Here's a list and why I think they're not adequate: Pull the code from private repos before starting the Docker build I've seen different approaches being suggested. We could also use SSH forwarding to pull private git repositories on remote servers.
Prior to Docker days, we had our private keys in our home directly ~/.ssh and could pull git repositories without sharing our secrets. In majority of cases, we need to provide a private SSH key to pull our code from a private git repository. Secrets, including private SSH keys, are almost always needed during a build. ← All Articles Using SSH Private keys securely in Docker build Khash Sajadi
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