Build linux-arm64 on correct runner

Author: rcrowe

.github/workflows/build.yml

@@ -0,0 +1,83 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "*.*.*"
+
+permissions:
+  actions: read
+  contents: write
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Validate tag format
+        run: |
+          echo "Using tag: ${{ github.ref_name }}"
+          if ! [[ "${{ github.ref_name }}" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Tag format is invalid. Expected semantic versioning (e.g., 1.2.3)."
+            exit 1
+          fi
+
+  build:
+    strategy:
+      matrix:
+        runs-on: [
+          "macos-latest",
+          "ubuntu-latest",
+          "ubuntu-24.04-arm"
+        ]
+    runs-on: ${{ matrix.runs-on }}
+    needs:
+      - validate
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          repository: apple/swift-protobuf
+          ref: ${{ github.ref_name }}
+      - name: Set build configuration
+        id: build-info
+        run: |
+          if [[ $(uname) == "Darwin" ]]; then
+            echo "build_os=macos" >> "$GITHUB_OUTPUT"
+          elif [[ $(uname) == "Linux" ]]; then
+            echo "build_os=linux" >> "$GITHUB_OUTPUT"
+          else
+            echo "Unsupported OS"
+            exit 1
+          fi
+
+          if [[ "$(uname -m)" == "aarch64" ]]; then
+            echo "build_arch=arm64" >> "$GITHUB_OUTPUT"
+          elif [[ "$(uname -m)" == "arm64" ]]; then
+            echo "build_arch=arm64" >> "$GITHUB_OUTPUT"
+          elif [[ "$(uname -m)" == "x86_64" ]]; then
+            echo "build_arch=amd64" >> "$GITHUB_OUTPUT"
+          elif [[ "$(uname -m)" == "amd64" ]]; then
+            echo "build_arch=amd64" >> "$GITHUB_OUTPUT"
+          else
+            echo "Unsupported architecture"
+            exit 1
+          fi
+      - name: Build protoc-gen-swift
+        run: |
+          echo "Building protoc-gen-swift-${{ steps.build-info.outputs.build_os }}-${{ steps.build-info.outputs.build_arch }}"
+          swift build -c release
+          mv .build/release/protoc-gen-swift protoc-gen-swift-${{ steps.build-info.outputs.build_os }}-${{ steps.build-info.outputs.build_arch }}
+      - uses: actions/upload-artifact@v4
+        with:
+          name: protoc-gen-swift-${{ steps.build-info.outputs.build_os }}-${{ steps.build-info.outputs.build_arch }}
+          path: protoc-gen-swift-${{ steps.build-info.outputs.build_os }}-${{ steps.build-info.outputs.build_arch }}
+
+  publish:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    steps:
+      - uses: actions/download-artifact@v4
+      - run: ls -l; ls -l protoc-gen-swift-*
+      - uses: softprops/action-gh-release@c95fe1489396fe8a9eb87c0abf8aa5b2ef267fda
+        with:
+          files: '**/protoc-gen-swift-*'