Use merge commit sha to compare against

Author: WyriHaximus

.github/workflows/ci.yml

@@ -92,7 +92,9 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event_name == 'pull_request' }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
       - name: Download Images
         if: github.actor == 'dependabot[bot]'
         uses: actions/download-artifact@v2

Dockerfile-build

@@ -11,4 +11,6 @@ FROM wyrihaximusnet/php:8.2-nts-alpine-slim-root AS runtime
 RUN mkdir /workdir
 COPY ./entrypoint.sh ./comment.php ./post-process.php ./composer.* /workdir/
 COPY --from=install-dependencies /workdir/vendor/ /workdir/vendor/
+# hadolint ignore=DL3018
+RUN apk add --no-cache jq
 ENTRYPOINT ["/workdir/entrypoint.sh"]