fix: [#34] added extra step to retrieve the registry content

.github/workflows/docker-registry.yml

@@ -13,9 +13,10 @@ permissions:
   contents: read
   packages: write
 env:
+  BUILD_IMAGE_NAME: mcvs-registry
   DOCKERFILE_CONTEXT: ./registry
-  IMAGE_MANIFEST_LIST: datadog/agent:7.59.0
-  IMAGE_MANIFEST_SINGLE: nginx/nginx:1.27.0
+  IMAGE_MANIFEST_LIST: nginx/nginx:1.27.0-alpine
+  IMAGE_MANIFEST_SINGLE: nginx/nginx:1.27.0-alpine-slim-amd64
   REGCTL_VERSION: v0.8.0
   REGISTRY_LOCAL: localhost:5000
   REGISTRY_REMOTE: public.ecr.aws
@@ -37,11 +38,11 @@ jobs:
       - name: Create registry backup directory
         run: mkdir -p ${{ env.DOCKERFILE_CONTEXT }}/backup-registry
       - name: Pull images data and prepare context directory
-        if: startsWith(github.ref, 'refs/tags/')
         shell: bash
         run: |
           #!/bin/bash
 
+          # run local registry
           docker run -d \
             -p 5000:5000 \
             --name mcvs-registry-tmp \
@@ -80,3 +81,18 @@ jobs:
           dockle-accept-key: "curl,HOME,libcrypto3,libssl3,PATH"
           images: ghcr.io/${{ github.repository }}/${{ matrix.build-args }}
           token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Get new registry catalog
+        if: ${{ github.event_name == 'pull_request' }}
+        shell: bash
+        run: |
+          #!/bin/bash
+          docker images
+
+          docker run -d \
+            -p 5005:5000 \
+            --name mcvs-registry \
+            ghcr.io/${{ github.repository }}/${{ env.BUILD_IMAGE_NAME }}:pr-${{ github.event.number }}
+
+          curl --silent http://localhost:5005/v2/_catalog
+
+          docker rm --force mcvs-registry