ci: update CI pipeline image build tests

- Move build-and-test-image to actions
- Run image test on PR and push to main
- Run tests against multiple arch's

.github/actions/image-test/action.yml

@@ -0,0 +1,26 @@
+name: build-and-test-image
+description: Build and test the container image
+
+runs:
+  using: composite
+  steps:
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Build container image
+      uses: docker/build-push-action@v4
+      with:
+        context: .
+        platforms: ${{ matrix.build-arch }}
+        tags: localhost/ansible-rulebook:test
+        load: true
+
+    - name: Run tests
+      shell: bash
+      run: >
+        docker run --rm -u 0 localhost/ansible-rulebook:test bash -c '
+        pip install -r requirements_test.txt &&
+        pytest -m "e2e" -n auto'

.github/workflows/build-image.yml

@@ -21,14 +21,8 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
-    - name: Build local image
-      run: docker build -t localhost/ansible-rulebook:test .
-
-    - name: Run tests
-      run: >
-        docker run --rm -u 0 localhost/ansible-rulebook:test bash -c '
-        pip install -r requirements_test.txt &&
-        pytest -m "e2e" -n auto'
+    - name: Build and test the container image
+      uses: ./.github/actions/image-test
 
   build-and-push-image:
     needs: build-and-test-image

.github/workflows/ci.yml

@@ -79,3 +79,21 @@ jobs:
           flags: "unittests-${{ matrix.python-version }}"
           name: codecov-umbrella
           verbose: true
+
+  build-and-test-image:
+    # we must use a matrix because buildx load
+    # does not currently support multi-arch.
+    # https://docs.docker.com/engine/reference/commandline/buildx_build/#docker
+    strategy:
+      matrix:
+        build-arch:
+          - linux/amd64
+          - linux/arm64
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Build and test the container image
+      uses: ./.github/actions/image-test