ci: improve build workflow

.github/workflows/build.yml

@@ -116,10 +116,61 @@ jobs:
         dev/cypress/ci-setup.sh
         docker run --name cypress --ipc=host --shm-size 1G -v $GITHUB_WORKSPACE:/e2e -w /e2e cypress/included:4.9.0 --record --key "$(CYPRESS_KEY)" --headless --group "$MATRIXENV" --ci-build-id "$REL_VERSION_STRICT" --config baseUrl=http://172.17.0.1:3000
           
+  arm:
+    name: ARM Build
+    runs-on: ubuntu-latest
+    needs: [cypress]
+    
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+      
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+    
+    - name: Login to DockerHub
+      uses: docker/login-action@v1 
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+    
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v1 
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+        
+    - name: Download a Build Artifact
+      uses: actions/download-artifact@v2.1.0
+      with:
+        name: drop
+        path: drop
+
+    - name: Extract Build
+      run: |
+        mkdir -p build
+        tar -xzf $GITHUB_WORKSPACE/drop/wiki-js.tar.gz -C $GITHUB_WORKSPACE/build --exclude=node_modules
+    
+    - name: Build and push Docker images
+      uses: docker/build-push-action@v2.9.0
+      with:
+        context: .
+        file: dev/build-arm/Dockerfile
+        platforms: linux/arm64,linux/arm/v7
+        push: true
+        tags: |
+          requarks/wiki:canary-arm
+          requarks/wiki:canary-arm-${{ env.REL_VERSION_STRICT }}
+          ghcr.io/requarks/wiki:canary-arm
+          ghcr.io/requarks/wiki:canary-arm-${{ env.REL_VERSION_STRICT }}
+          
   windows:
     name: Windows Build
     runs-on: windows-latest
-    needs: [build]
+    needs: [cypress]
     
     steps:
     - name: Setup Node.js environment