setup arm64 emulated builder

.github/workflows/build.yml

@@ -66,6 +66,11 @@ jobs:
     permissions:
       contents: write
     steps:
+      - name: Set up QEMU
+        uses: https://github.com/docker/setup-qemu-action@v3
+        with:
+          platforms: arm64
+
       - name: Clone Main Repo
         run: |
           git clone --depth 1 https://github.com/liamcottle/reticulum-meshchat reticulum-meshchat
@@ -79,34 +84,59 @@ jobs:
           echo "Latest tag is $LATEST_TAG"
           git checkout $LATEST_TAG
 
-      - name: Install NodeJS
-        uses: https://github.com/actions/setup-node@v3
-        with:
-          node-version: 18
-
-      - name: Install Python
-        uses: https://github.com/actions/setup-python@v5
-        with:
-          python-version: "3.11"
-
-      - name: Install Python Deps
-        working-directory: ./reticulum-meshchat
-        run: pip install -r requirements.txt
-
-      - name: Install NodeJS Deps
-        working-directory: ./reticulum-meshchat
-        run: npm install
-
-      - name: Install Cross-Compilation Tools
+      - name: Setup ARM64 Build Environment
         run: |
           sudo apt-get update
-          sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
+          sudo apt-get install -y qemu-user-static binfmt-support
+          sudo docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
 
-      - name: Build Electron App for AArch64
-        working-directory: ./reticulum-meshchat
-        run: npm run dist
-        env:
-          ELECTRON_BUILDER_ARCH: arm64
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Build in ARM64 Container
+        run: |
+          cat > Dockerfile << 'EOF'
+          FROM arm64v8/ubuntu:22.04
+
+          ENV DEBIAN_FRONTEND=noninteractive
+
+          # Install dependencies
+          RUN apt-get update && apt-get install -y \
+            git curl wget python3 python3-pip \
+            build-essential libssl-dev \
+            fakeroot rpm libsqlite3-dev libffi-dev \
+            libx11-dev libxkbfile-dev libsecret-1-dev \
+            libasound2 libnss3 libxtst6 libglib2.0-0 libgconf-2-4
+
+          # Install Node.js 18
+          RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash -
+          RUN apt-get install -y nodejs
+
+          # Set up working directory
+          WORKDIR /app
+
+          # Copy application code
+          COPY ./reticulum-meshchat /app
+
+          # Install dependencies
+          RUN pip3 install -r requirements.txt
+          RUN npm install
+
+          # Build the AppImage
+          CMD npm run dist
+          EOF
+
+          docker buildx build --platform linux/arm64 -t arm64-build-env .
+
+          # Run the build process in the container
+          docker run --platform linux/arm64 --rm -v $(pwd)/reticulum-meshchat:/app \
+            -e ELECTRON_BUILDER_ARCH=arm64 \
+            -v $(pwd)/dist:/app/dist \
+            arm64-build-env
+
+          # Copy the built artifacts
+          mkdir -p reticulum-meshchat/dist
+          cp -r dist/* reticulum-meshchat/dist/ || true
 
       - name: Create Release
         id: create_release