refactor: enhance unit and E2E test workflows with image tagging and GHCR integration

Author: randygrok

.github/workflows/test.yml

@@ -35,12 +35,40 @@ jobs:
   unit_test:
     name: Run Unit Tests
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: read
     steps:
       - uses: actions/checkout@v6
       - name: set up go
         uses: actions/setup-go@v6
         with:
           go-version-file: ./go.mod
+      - name: Compute image tag
+        id: image-tag
+        shell: bash
+        run: |
+          if [ -n "${{ github.event.pull_request.number }}" ]; then
+            TAG="pr-${{ github.event.pull_request.number }}"
+          else
+            TAG="${{ github.ref_name }}"
+            TAG="${TAG//\//-}"
+          fi
+          echo "tag=$TAG" >> "$GITHUB_OUTPUT"
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Pull and tag ev-node-testapp image for tests
+        shell: bash
+        run: |
+          set -euo pipefail
+          SRC_IMAGE="ghcr.io/${{ github.repository_owner }}/ev-node-testapp:${{ steps.image-tag.outputs.tag }}"
+          echo "Pulling $SRC_IMAGE"
+          docker pull "$SRC_IMAGE"
+          docker tag "$SRC_IMAGE" evstack:local-dev
       - name: Run unit test
         run: make test-cover
       - name: Upload unit test coverage report
@@ -70,12 +98,40 @@ jobs:
     name: Run E2E System Tests
     needs: build_all-apps
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: read
     steps:
       - uses: actions/checkout@v6
       - name: set up go
         uses: actions/setup-go@v6
         with:
           go-version-file: ./go.mod
+      - name: Compute image tag
+        id: image-tag
+        shell: bash
+        run: |
+          if [ -n "${{ github.event.pull_request.number }}" ]; then
+            TAG="pr-${{ github.event.pull_request.number }}"
+          else
+            TAG="${{ github.ref_name }}"
+            TAG="${TAG//\//-}"
+          fi
+          echo "tag=$TAG" >> "$GITHUB_OUTPUT"
+      - name: Log in to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Pull and tag ev-node-testapp image for tests
+        shell: bash
+        run: |
+          set -euo pipefail
+          SRC_IMAGE="ghcr.io/${{ github.repository_owner }}/ev-node-testapp:${{ steps.image-tag.outputs.tag }}"
+          echo "Pulling $SRC_IMAGE"
+          docker pull "$SRC_IMAGE"
+          docker tag "$SRC_IMAGE" evstack:local-dev
       - name: E2E Tests
         run: make test-e2e