Detect changes against most recent commit in PR instead of just on push

[weiligao]

Currently it's only possible to detect changes against most recent commit if triggered by push using base: ${{ github.ref }}, it would be nice if it would also be supported for trigger pull_request.

[flucrezia]

I think I'm running into this issue but I am not sure.

I have the following:

on: 
  pull_request:
    branches:
      - master
      - release/*
...
jobs:
  update-dockers:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: read
...
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Filter Dockerfile changes
        uses: $dorny/paths-filter@v3
        id: filter
        with:
          list-files: shell
          filters: |
            dockerfile:
              - added|modified: 'Dockerfile.*'

Then I push on a PR branch a change that affects a file detected by the filter (at lease on push events):

::group::Fetching list of changed files for PR#492 from Github API
Invoking listFiles(pull_number: 492, per_page: 100)
Received 2 items
[changed] .gitea/workflows/main.yml
[changed] Dockerfile.deb11.6
::endgroup::
Detected 2 changed files
Results:
::group::Filter dockerfile = false
Matching files: none
::endgroup::
Changes output set to []

There is any matching, but Dockerfile.deb11.6 should have matched!
Am I missing something ?
Many thanks,
Francesco

[flucrezia]

Sorry, I found the problem. Replacing:
- added|modified: 'Dockerfile.*'
With:
- added|modified|changed: 'Dockerfile.*'

Make it worked.