perf: delete ACR image after successful tests

Author: andhrelja

.github/workflows/k8s_test.yml

@@ -98,3 +98,28 @@ jobs:
           -h ${{ github.head_ref }} \
           -r ${{ env.AZURE_CONTAINER_REGISTRY }} \
           -t "${{ inputs.test_cmd }}"
+
+  az-acr-delete:
+    name: "ACR: Delete Test Image"
+    runs-on: ubuntu-latest
+    needs: [k8-test]
+    environment: dev
+    env:
+      AZURE_CONTAINER_REGISTRY: ${{ vars.AZURE_CONTAINER_REGISTRY }}
+      ACR_LOGIN_USERNAME: ${{ secrets.ACR_LOGIN_USERNAME }}
+      ACR_LOGIN_PASSWORD: ${{ secrets.ACR_LOGIN_PASSWORD }}
+    steps:
+      - name: Azure Cloud Login
+        uses: Azure/login@v2
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID }}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+      
+      - name: Delete Test Container Image
+        uses: azure/cli@v2
+        with:
+          inlineScript: |
+            az acr repository delete \
+              --name ${{ env.AZURE_CONTAINER_REGISTRY }} \
+              --image ${{ env.AZURE_CONTAINER_REGISTRY }}/${{ github.event.repository.name }}:test-${{ github.head_ref }}