chore: upgrade golangci-lint to v1.42.0 and add cache

.github/workflows/go.yml

@@ -9,16 +9,34 @@ on:
       - master
 
 jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup go
+        uses: actions/setup-go@v2
+        with:
+          go-version: '^1.16'
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Setup golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.42.0
+          args: --verbose
   test:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        go: [1.13, 1.14, 1.15, 1.16]
+        go: [1.13, 1.14, 1.15, 1.16, 1.17]
+        include:
+          - os: ubuntu-latest
+            go-build: ~/.cache/go-build
+          - os: macos-latest
+            go-build: ~/Library/Caches/go-build
     name: ${{ matrix.os }} @ Go ${{ matrix.go }}
     runs-on: ${{ matrix.os }}
     env:
       GO111MODULE: on
-      TESTTAGS: ${{ matrix.test-tags }}
       GOPROXY: https://proxy.golang.org
     steps:
       - name: Set up Go ${{ matrix.go }}
@@ -31,12 +49,19 @@ jobs:
         with:
           ref: ${{ github.ref }}
 
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v2
-
+      - uses: actions/cache@v2
+        with:
+          path: |
+            ${{ matrix.go-build }}
+            ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
       - name: Run Tests
         run: |
           go test -v -covermode=atomic -coverprofile=coverage.out
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2
+        with:
+          flags: ${{ matrix.os }},go-${{ matrix.go }}