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.github/workflows/linter.yml

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+name: Linter
+
+on:
+  push:
+    branches:
+      - dev
+    paths:
+      - "**/*.go"
+      - ".github/workflows/linter.yml"
+  pull_request:
+    types: [ opened, synchronize, reopened ]
+    paths:
+      - "**/*.go"
+      - ".github/workflows/linter.yml"
+
+jobs:
+  lint:
+    if: github.repository == 'sagernet/sing'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Get latest go version
+        id: version
+        run: |
+          echo ::set-output name=go_version::$(curl -s https://raw.githubusercontent.com/actions/go-versions/main/versions-manifest.json | grep -oE '"version": "[0-9]{1}.[0-9]{1,}(.[0-9]{1,})?"' | head -1 | cut -d':' -f2 | sed 's/ //g; s/"//g')
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ steps.version.outputs.go_version }}
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: latest