Add minimal job

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -9,6 +9,27 @@ on:
       - master
 
 jobs:
+  minimal:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2.3.3
+        with:
+          path: action
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Build
+        uses: ./action
+        with:
+          file: ./test/Dockerfile
+      -
+        name: Dump context
+        if: always()
+        uses: crazy-max/ghaction-dump-context@v1
+
   git-context:
     runs-on: ubuntu-latest
     services: