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How to run a github action only on a specified folder?

I have a monorepo setup and I want to introduce CI/CD into it using Github actions. I want a separate workflow for each service. So far, I have figured out that you can use path filtering to limit when an action is run BUT I have yet to figure out how to have the action run only on a specified folder/path.

This is my current structure:

mono-repo --
            |
            |- services --
            |             |- service1
            |             |- service2
            |- .github --
                         |- workflows --
                                        |- service1.yaml
                                        |- service2.yaml

Any help is deeply appreciated. Thank you in advance.

Solution

  • Each step within a GitHub Actions workflow supports a parameter which sets the working directory for that step.

    - name: build step
  working-directory: ./src/foo
  run: ...

    Additionally, if your entire workflow takes place within a singular subdirectory, you can set the default working directory at the top level:

    defaults:
  run:
    working-directory: ./src/foo