feat: add multi-platform builds

Author: lsorber

.github/workflows/publish.yml

@@ -19,6 +19,12 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
 
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
     - name: Login to Docker Hub
       uses: docker/login-action@v1 
       with:
@@ -32,5 +38,6 @@ jobs:
           "PYTHON_VERSION=${{ matrix.python-version }}"
           "CUDA_VERSION=${{ matrix.cuda-version }}"
         context: .
+        platforms: linux/amd64,linux/arm64
         push: true
         tags: radixai/python-gpu:${{ matrix.python-version }}-cuda${{ matrix.cuda-version }}