Auto tag & publish master branch (#93)

Author: kwerle

.github/workflows/release.yml

@@ -0,0 +1,50 @@
+name: Build and Push Multi-Arch Docker Image
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+
+    - name: Extract version
+      id: get_version
+      run: |
+        VERSION=$(grep -Eo '[0-9]+\.[0-9]+\.[0-9]+' lib/ruby_language_server/version.rb)
+        echo "VERSION=$VERSION" >> $GITHUB_ENV
+        echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
+
+    - name: Build and push multi-arch Docker image
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        platforms: linux/amd64,linux/arm64
+        push: true
+        tags: |
+          kwerle/ruby_language_server:latest
+          kwerle/ruby_language_server:${{ env.VERSION }}
+
+    - name: Create GitHub release
+      uses: softprops/action-gh-release@v2
+      with:
+        tag_name: v${{ env.VERSION }}
+        name: v${{ env.VERSION }}
+        generate_release_notes: true
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}