Simple workflow to build on every PR to develop

Signed-off-by: Michael Dresser <michaelmdresser@gmail.com>

.github/workflows/pr.yaml

@@ -0,0 +1,25 @@
+name: Develop PR - build, test
+
+on:
+  pull_request:
+    branches:
+      - develop
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          path: ./
+
+      - 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