To sync official codebase with fork https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork git fetch upstream git checkout master git merge upstream/master Commit, then push to mount your code version to official docker docker run -it --rm -v /data2:/data2 -v /data:/data -v /data2/simon/github/opendrift:/code/ opendrift/opendrift:py3-v1.0.7