Create GitHub action for build

Add build GitHub action based on template.

.github/workflows/build.yml

@@ -0,0 +1,37 @@
+name: Build
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.15
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Get dependencies
+      run: |
+        go mod download
+        go get -u github.com/jteeuwen/go-bindata/...
+        make internal/img/font-hack.go
+
+    - name: Build
+      run: |
+        go build ./...
+
+    - name: Test
+      run: |
+        go get github.com/onsi/ginkgo/ginkgo
+        go get github.com/onsi/gomega/...
+        make test