GitHub actions migration (#540)

.github/workflows/checks.yml

@@ -0,0 +1,57 @@
+name: checks
+
+on:
+  - pull_request
+  - push
+
+env:
+  GO_VERSION: 1.17
+  CGO_ENABLED: 0
+
+jobs:
+  tests:
+    name: tests
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:12
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: booktown
+        ports:
+          - 5432:5432
+        options: >-
+            --health-cmd pg_isready
+            --health-interval 10s
+            --health-timeout 5s
+            --health-retries 5
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@v2
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - run: go mod download
+      - run: make test
+        env:
+          MallocNanoZone: 0 # https://github.com/golang/go/issues/49138
+          CGO_ENABLED: 1
+          PGHOST: localhost
+          PGUSER: postgres
+          PGPASSWORD: postgres
+          PGDATABASE: booktown
+
+  fmt:
+    name: fmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@v2
+        with:
+          go-version: ${{ env.GO_VERSION }}
+      - run: go mod download
+      - run: script/check_formatting.sh