Try running E2E tests on PRs by leveraging the already built operator…

… image

.github/workflows/pr.yaml

@@ -25,6 +25,8 @@ jobs:
   pr-validate:
     name: PR Validate
     runs-on: ubuntu-latest
+    env:
+      CONTAINER_ENGINE: podman
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -36,7 +38,7 @@ jobs:
         run: |
           # don't fail if nothing returned by grep
           set +e 
-          CHANGES="$(git diff --name-only HEAD~1 | \
+          CHANGES="$(git diff --name-only ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} | \
             grep -E "workflows/pr.yaml|Makefile|bundle/|config/|go.mod|go.sum|.+\.go" | \
             grep -v -E "/.rhdh/")";
           echo "Changed files for this commit:"
@@ -71,3 +73,27 @@ jobs:
         with:
           # Path to SARIF file relative to the root of the repository
           sarif_file: gosec.sarif
+
+      - name: Prepare E2E Tests for PR by waiting until operator image is built and published
+        # run this stage only if there are changes that match the includes and not the excludes
+        if: ${{ env.CHANGES != '' }}
+        timeout-minutes: 600
+        run: |
+          SHORT_SHA=$(git rev-parse --short HEAD)
+          BASE_VERSION=$(grep -E "^VERSION \?=" Makefile | sed -r -e "s/.+= //") # 0.1.0
+          OPERATOR_IMAGE="quay.io/janus-idp/operator:${BASE_VERSION}-pr-${{ github.event.number }}-${SHORT_SHA}"
+          echo "Waiting until operator image is found or timeout expires: ${OPERATOR_IMAGE}..."
+          until ${CONTAINER_ENGINE} image pull "${OPERATOR_IMAGE}"  &> /dev/null; do
+            echo -n .
+          done
+          echo "... operator image found: ${OPERATOR_IMAGE}."
+          echo "OPERATOR_IMAGE=${OPERATOR_IMAGE}" >> $GITHUB_ENV
+      - name: Start Minikube
+        uses: medyagh/setup-minikube@606b71970c783154fe49b711486c717f5780f485 # v0.0.15
+        with:
+          addons: ingress
+      - name: Run E2E tests
+        env:
+          BACKSTAGE_OPERATOR_TESTS_PLATFORM: minikube
+          IMG: ${{ env.OPERATOR_IMAGE }}
+        run: make test-e2e