better-setup-golangci-lint v1: pinned static binary

README.md

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+# better-setup-golangci-lint
+
+Pinned static golangci-lint from the release tarball — no install-script round-trips, runs on
+musl runner images.
+
+```yaml
+- uses: https://git.madapes.com/actions/better-setup-golangci-lint@v1
+  with: { version: "2.15.0" }
+```

action.yml

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+name: better-setup-golangci-lint
+description: Install a pinned golangci-lint binary statically from its GitHub release asset — musl-safe, no GitHub API probe, Forgejo/act runner safe.
+inputs:
+  version:
+    description: Exact golangci-lint version to install (x.y.z).
+    required: true
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        set -euo pipefail
+        v="${{ inputs.version }}"
+        case "$(uname -m)" in
+          x86_64|amd64) arch=amd64 ;;
+          aarch64|arm64) arch=arm64 ;;
+          *) echo "better-setup-golangci-lint: unsupported arch $(uname -m)" >&2; exit 1 ;;
+        esac
+        curl --retry 3 --retry-delay 2 -fsSL -o /tmp/gcl.tgz \
+          "https://github.com/golangci/golangci-lint/releases/download/v${v}/golangci-lint-${v}-linux-${arch}.tar.gz"
+        tar -xzf /tmp/gcl.tgz -C /tmp "golangci-lint-${v}-linux-${arch}/golangci-lint"
+        mv "/tmp/golangci-lint-${v}-linux-${arch}/golangci-lint" /usr/local/bin/golangci-lint
+        rm -rf /tmp/gcl.tgz "/tmp/golangci-lint-${v}-linux-${arch}"
+        golangci-lint version