ci(github): isolate container test workflow

.github/workflows/container.yml

@@ -0,0 +1,18 @@
+name: Container Tests
+
+on:
+  workflow_call:
+
+jobs:
+  integration_test:
+    name: 🚥 Container test
+    needs:
+      - Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: docker pull ghcr.io/${{ github.repository }}:${{ github.sha }}
+      - name: 🚥 Run Container Tests
+        uses: docker://gcr.io/gcp-runtimes/container-structure-test:v1.15.0
+        with:
+          args: test --config container-structure-test.yml --image ghcr.io/${{ github.repository }}:${{ github.sha }} --verbosity debug

.github/workflows/docker.yml

@@ -1,7 +1,7 @@
 name: Docker Image
 
 on:
-  push:
+  workflow_call:
 
 jobs:
   build:
@@ -41,16 +41,3 @@ jobs:
           cache-to: type=registry,ref=ghcr.io/${{ github.repository }}:buildcache,mode=max
           build-args: |
             SOURCE_COMMIT=${{ github.sha }}
-
-  integration_test:
-    name: 🚥 Integration test
-    needs:
-      - Build
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - run: docker pull ghcr.io/${{ github.repository }}:${{ github.sha }}
-      - name: 🚥 Run Container Tests
-        uses: docker://gcr.io/gcp-runtimes/container-structure-test:v1.15.0
-        with:
-          args: test --config container-structure-test.yml --image ghcr.io/${{ github.repository }}:${{ github.sha }} --verbosity debug

.github/workflows/end-to-end.yml

@@ -23,7 +23,15 @@ env:
   HOST: http://172.18.0.1:3000
   ZAMMAD_TOKEN: ${{ secrets.ZAMMAD_TOKEN }}
 jobs:
+  build:
+    uses: ./.github/workflows/docker.yml
+
+  container-tests:
+    needs: build
+    uses: ./.github/workflows/container.yml
+
   test:
+    needs: build
     strategy:
       # don't fail the entire matrix on failure
       fail-fast: false