I am trying to create a Dockerfile based action that adds a program to the $PATH so that it can be used by later actions. My action runs code like this:
mkdir -p $GITHUB_WORKSPACE/bin echo "echo Hello, world!" > $GITHUB_WORKSPACE/bin/hello-world echo "::add-path::$GITHUB_WORKSPACE/bin"
My test workflow uses this like so:
jobs: test: runs-on: ubuntu-latest steps: - uses: firstname.lastname@example.org - name: Add program to path uses: ./ - name: Use program run: hello-world
This fails because while the program has been added to $GITHUB_WORKSPACE/bin/hello-world the value of $GITHUB_WORKSPACE is different in the action and in the workspace step.
In the action it is /github/workspace/, while in the workflow it is /home/runner/work/setup-gleam/setup-gleam/, so the $PATH addition set by the action is not correct.
How can I add a file to a directory from a dockerfile based GitHub action so that it is on the path for the rest of the workflow? It seems that there is no writable $PATH directory shared between dockerfile actions and non-dockerfile actions.