Add Docker Build Action (#193)

* Adds docker build job

* Fixes step description

Author: ansermino

.github/workflows/tests.yml

@@ -47,3 +47,18 @@ jobs:
           args: --timeout=5m
       - name: License Check
         run: make license-check
+
+  build:
+    name: Docker Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          push: false
+          tags: ${{ github.repository }}:latest