use an explicit tag

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

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

@@ -49,21 +49,21 @@ jobs:
         with:
           context: example-apps/chatbot-rag-app
           # If this is a pull request, tag the image locally for testing.
-          tags: ${{ github.event_name == 'pull_request' && format('{0}:latest', env.IMAGE) || '' }}
+          tags: ${{ github.event_name == 'pull_request' && 'chatbot-rag-app:test' || '' }}
           # When pushing to main, push this image to the repository by digest
           # which is later used to assemble a multi-architecture image.
           outputs: type=image,name=${{ 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 up elasticsearch -d --wait --wait-timeout 120
+        run: docker compose -f docker/docker-compose-elastic.yml up --quiet-pull -d --wait --wait-timeout 120 elasticsearch
       - name: test image
         if: github.event_name == 'pull_request'
         working-directory: example-apps/chatbot-rag-app
         run: |  # This tests ELSER is working, which doesn't require an LLM.
           cp env.example .env
-          docker compose run --rm -T create-index
+          IMAGE=chatbot-rag-app:test docker compose run --rm -T create-index
       - name: export digest
         if: github.event_name == 'push'
         run: |