My goal is to run some git command inside a build using Bamboo YAML spec and atlassian/bamboo-agent-base docker image.
This is the Dockerfile extended from atlassian/bamboo-agent-base (copied from https://hub.docker.com/r/atlassian/bamboo-agent-base)
RUN apt-get update && \
apt-get install maven -y && \
apt-get install git -y
The image is built as
Here is my bamboo yaml spec:
name: project CI
- echo starting push code task
- ls -la
- git status
- git diff
- echo finished push code task
When the job runs, "ls -la" does list the source code. Here is the output of the rest of the command:
13-Feb-2019 23:22:29 error: object directory /var/bamboo/xml-data/build-dir/_git-repositories-cache/99b53e1f0d967effa88f7452e5067096c9acf7e1/.git/objects does not exist; check .git/objects/info/alternates.
13-Feb-2019 23:22:29 fatal: bad object HEAD
When the build is run without using the docker image, it works fine:
13-Feb-2019 23:25:07 On branch feature/SE-1234
13-Feb-2019 23:25:07 Your branch is up-to-date with 'origin/feature/SE-1234.
13-Feb-2019 23:25:07 nothing to commit, working directory clean
Is there any reason why git does not work in the docker image?
It appears that when bamboo clones the source repository it leverages "git alternate objects" (presumably to be space efficient).
As a result, the cloned repository contains references to objects that exist outside of $PWD - it your case it's:
if you attempt to perform git operations from within the container you end up with an error log full of:
error: refs/XXXX does not point to a valid object!
because that directory won't exist inside of the container unless you've explicitly mounted it.
The workaround is thus to either mount the cache directory into your container 🤮 (read only!) or add a shell task that "dissociates" your clone so there are no references to external objects. I used:
git repack -a -d
and that seems to have resolved the problem.
I am not an expert on Docker or git, but I will see if I can help.
How does the source code get into the container?
I didn't see any COPY command in your Dockerfile.
Also it looks like the .git folder is missing from the container https://medium.freecodecamp.org/understanding-git-for-real-by-exploring-the-git-directory-1e079c15b807
Also just wondering why you want to do a status and a diff inside a container, what is the higher level task you are trying to achieve? There may be an alternative way to do what you're trying to do.
I want to increment pom version and auto-commit to stash. Before I can do that, even git status does not work. The .git folder is there.
The source code is automatically put inside the docker container when I have dockerImage: in the bamboo yaml spec.
When I cat the config file in .git, the remote origin is set to some cache file outside of the container instead of the original url.
After I run these commands, it works:
git remote set-url https://<stash url>
Just wonder how using
in the bamboo yaml spec would change the git head.
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