CI: Add artifact information to PR

.github/pull_request_template.md

@@ -0,0 +1,27 @@
+<!--
+Thank you for contributing to this project!
+
+- This project has a Contributor Code of Conduct: https://voxpupuli.org/coc/
+- Please check that here is no existing issue or PR that addresses your problem.
+- Our vulnerabilities reporting process is at https://voxpupuli.org/security/
+
+- The CI will build rpm and deb packages for openvoxdb & openvox-server. The
+packages will be stored in a zip archive and uploaded as GitHub artifacts.
+In the PR, go to Checks -> main. The archives will be linked at the bottom. It's
+always named openvoxerver/openvoxdb-$(git describe). The artifacts are available for 24
+hours.
+
+-->
+
+#### Pull Request (PR) description
+<!--
+Replace this comment with a description of your pull request.
+-->
+
+#### This Pull Request (PR) fixes the following issues
+<!--
+Replace this comment with the list of issues or n/a.
+Use format:
+Fixes #123
+Fixes #124
+-->

.github/workflows/pr.yml

@@ -77,6 +77,8 @@ jobs:
     runs-on: ubuntu-24.04
     needs:
       - get-ezbake-version
+    permissions:
+      pull-requests: write # to comment on the PR
     strategy:
       fail-fast: false
       matrix:
@@ -112,11 +114,31 @@ jobs:
           EZBAKE_VERSION: ${{ needs.get-ezbake-version.outputs.ezbake_version }} # ensures that we used the built version of ezbake and don't pull from clojars.org
       - name: Upload build artifacts
         uses: actions/upload-artifact@v6
+        id: upload
         with:
           name: ${{ matrix.project }}-${{ steps.version.outputs.describe }}-ezbake-${{ needs.get-ezbake-version.outputs.ezbake_version }}
           path: output/
           retention-days: 1 # quite low retention, because the artifacts are quite large
           overwrite: true # overwrite old artifacts if a PR runs again (artifacts are per PR * per project)
+      - name: Find existing comment
+        uses: peter-evans/find-comment@v4
+        if: github.event.pull_request.head.repo.full_name == github.repository
+        id: find-comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: '<!-- build-artifacts -->'
+      - name: Add or update comment
+        uses: peter-evans/create-or-update-comment@v5
+        if: github.event.pull_request.head.repo.full_name == github.repository
+        with:
+          comment-id: ${{ steps.find-comment.outputs.comment-id }}
+          issue-number: ${{ github.event.pull_request.number }}
+          edit-mode: append
+          body: |-
+            <!-- build-artifacts -->
+            The rpm/deb packages and the JAR file for ${{ github.repository }} are available in a zip archive:
+            ${{ steps.upload.outputs.artifact-url }}
 
   tests:
     if: always()