chore: generate build summary with Commitfest and patch ID information (#44)

Signed-off-by: Jonathan Gonzalez V. <[email protected]>
Signed-off-by: Niccolò Fei <[email protected]>
Co-authored-by: Niccolò Fei <[email protected]>

Author: sxd

.github/workflows/build-commitfest.yml

@@ -30,6 +30,8 @@ jobs:
     permissions:
       contents: read
       packages: write
+    outputs:
+      tag: ${{ env.TAG }}
     steps:
     - name: Checkout Code
       uses: actions/checkout@v4
@@ -60,3 +62,36 @@ jobs:
         build-args: |
           PG_REPO=https://github.com/postgresql-cfbot/postgresql.git
           PG_BRANCH=${{ env.BRANCH }}
+
+  generate-summary:
+    name: Commitfest Image Build summary
+    runs-on: ubuntu-22.04
+    needs:
+      - build-pg
+    steps:
+      - name: Output summary
+        run: |
+          commitFestID=${{ github.event.inputs.commitfest_id }}
+          commitFestPatchID=${{ github.event.inputs.patch_id }}
+          commitFestURL="https://commitfest.postgresql.org/${commitFestID}/${commitFestPatchID}"
+          image="${{ env.REGISTRY }}:${{ needs.build-pg.outputs.tag }}"
+          imageURL="https://${image}"
+          echo "# Commitfest Image Build summary" >> $GITHUB_STEP_SUMMARY
+          echo "**Commitfest Patch URL**: [$commitFestID / $commitFestPatchID]($commitFestURL)" >> $GITHUB_STEP_SUMMARY
+          echo "**Container Image**: [$image]($imageURL)" >> $GITHUB_STEP_SUMMARY
+          echo "## CloudNativePG Cluster definition" >> $GITHUB_STEP_SUMMARY
+          echo "You can create a cluster in CloudNativePG running this image:" >> $GITHUB_STEP_SUMMARY
+          echo "\`\`\`sh" >> $GITHUB_STEP_SUMMARY
+          echo "(cat <<EOF" >> $GITHUB_STEP_SUMMARY
+          echo "apiVersion: postgresql.cnpg.io/v1" >> $GITHUB_STEP_SUMMARY
+          echo "kind: Cluster" >> $GITHUB_STEP_SUMMARY
+          echo "metadata:" >> $GITHUB_STEP_SUMMARY
+          echo "  name: commitfest-$commitFestID-$commitFestPatchID" >> $GITHUB_STEP_SUMMARY
+          echo "spec:" >> $GITHUB_STEP_SUMMARY
+          echo "  imageName: $image" >> $GITHUB_STEP_SUMMARY
+          echo "  instances: 3" >> $GITHUB_STEP_SUMMARY
+          echo "  storage:" >> $GITHUB_STEP_SUMMARY
+          echo "    size: 1Gi" >> $GITHUB_STEP_SUMMARY
+          echo "EOF" >> $GITHUB_STEP_SUMMARY
+          echo ") | kubectl apply -f -" >> $GITHUB_STEP_SUMMARY
+          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY