Enable GitHub Actions with a build workflow (#354)

.github/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Build
+
+on:
+  pull_request_target:
+    branches: [ master ]
+
+jobs:
+
+  build_x86_64:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Set up Go 1.14
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.14
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Build
+      run: make controller
+
+    - name: Run
+      run: ./bin/controller -h || true