Troubleshooting: Retrieving Private Repositories in Docker Build Phase

retrieving-private-repositories-in-docker-build-phase.md

Retrieving Private Repositories in Docker Build Phase

Problem

During the build phase you may need to access dependencies in private (or, generally non-public) repositories.

Solution

This solution configures Git to use HTTPS with login and access token for the repository with URL <repo-url>.

1. Create an access token (see 1)
2. Add the following lines to your Dockerfile

   ARG LOGIN
   ARG TOKEN
   # Configure Git to use HTTPS with access token for git.maibornwolff.de; retrieve dependencies
   RUN git config --global url."https://${LOGIN}:${TOKEN}@<repo-url>/".insteadOf "https://<repo-url>/" 

3. Run docker build with arguments --build-arg <login> --build-arg <token>

    docker build -t <tag> --build-arg <login> --build-arg <token> <dockerfile>

Sources

• Fetching private github repos