Get some very basic CI working

.github/workflows/ci.yml

@@ -3,33 +3,20 @@ name: CI
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 
 jobs:
   build:
     name: Build
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-        go: ['1.14', '1.15', '1.16']
-    env:
-      VERBOSE: 1
-      GOFLAGS: -mod=readonly
-      GOPROXY: https://proxy.golang.org
+    runs-on: [ubuntu-latest]
 
     steps:
-      - name: Set up Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ matrix.go }}
-
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
-      - name: Lint
-        run: make lint
+      - name: Set up Go
+        uses: actions/setup-go@v5
 
-      - name: Test
-        run: make test
+      - name: Build
+        run: go build ./...