Update main.yml

.github/workflows/main.yml

@@ -0,0 +1,23 @@
+name: CI
+
+on: 
+  push:
+    branches:
+    - master
+    - release/*
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.12
+
+      - name: Check out code
+        uses: actions/checkout@v1
+
+      - name: Build
+        run: make build