Setting up a CI pipeline based on GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+name: Go Continuous Integration
+on: [push, pull_request]
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    env:
+        GOPATH: ${{ github.workspace }}/go
+    strategy:
+      matrix:
+        go: [1.11, 1.12, 1.13]
+    steps:
+
+    - name: Set up Go ${{ matrix.go }}
+      uses: actions/setup-go@v1
+      with:
+        go-version: ${{ matrix.go }}
+      id: go
+
+    - name: Check out code into GOPATH
+      uses: actions/checkout@v2
+      with:
+        path: go/src/firebase.google.com/go
+
+    - name: Get dependencies
+      run: go get -t -v $(go list ./... | grep -v integration)
+
+    - name: Run Linter
+      run: |
+        go get golang.org/x/lint/golint
+        $GOPATH/bin/golint -set_exit_status firebase.google.com/go/...
+
+    - name: Run Unit Tests
+      if: success() || failure()
+      run: go test -v -race -test.short firebase.google.com/go/...
+
+    - name: Run Formatter
+      working-directory: ./go/src/firebase.google.com/go
+      if: matrix.go != '1.11'
+      run: |
+        if [[ ! -z "$(gofmt -l -s .)" ]]; then
+          echo "Go code is not formatted:"
+          gofmt -d -s .
+          exit 1
+        fi 
+
+    - name: Run Static Analyzer
+      run: go vet -v firebase.google.com/go/...