separate job

Signed-off-by: Adrian Cole <[email protected]>

.github/workflows/docker-chatbot-rag-app.yml

@@ -51,15 +51,6 @@ jobs:
           outputs: type=image,name=${{ env.IMAGE }},push-by-digest=true,name-canonical=true,push=${{ github.event_name == 'push' && 'true' || 'false' }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-      - name: start elasticsearch
-        if: github.event_name == 'pull_request'
-        run: docker compose -f docker/docker-compose-elastic.yml elasticsearch up -d --wait
-      - name: test image using index creation
-        if: github.event_name == 'pull_request'
-        working-directory: example-apps/chatbot-rag-app
-        run: |
-          cp env.example .env
-          docker compose run --rm -T create-index
       - name: export digest
         if: github.event_name == 'push'
         run: |
@@ -75,6 +66,30 @@ jobs:
           if-no-files-found: error
           retention-days: 1
 
+  # This tests the chatbot-rag-app image by running the create-index command.
+  # This command only relies on Elasticsearch, and verifies ELSER is working.
+  test-image:
+    strategy:
+      matrix:
+        runner:
+          - ubuntu-24.04
+          - ubuntu-24.04-arm
+    needs: build-image
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: start elasticsearch
+        run: docker compose -f docker/docker-compose-elastic.yml up elasticsearch -d --wait --wait-timeout 120
+      - name: test image
+        working-directory: example-apps/chatbot-rag-app
+        run: |
+          echo "Testing image ${IMAGE}"
+          cp env.example .env
+          docker compose run --rm -T create-index
+        env:
+          IMAGE: ${{ steps.build.outputs.digest }}
+
   push-manifest:
     runs-on: ubuntu-24.04
     needs: build-image