Don't build on 32-bit arm

Author: woldham-mgs

.github/workflows/docker.yml

@@ -21,13 +21,13 @@ jobs:
     steps:
       - name: Check out the repo
         uses: actions/checkout@v4
-      
+
       - name: Log in to Docker Hub
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-      
+
       - name: Extract metadata (tags, labels) for Docker
         id: meta
         uses: docker/metadata-action@v5
@@ -39,13 +39,13 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
-      
+
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
           context: .
-          platforms: linux/amd64,linux/arm64,linux/arm
-          file: ./Dockerfile.${{ matrix.os }} 
+          platforms: linux/amd64,linux/arm64
+          file: ./Dockerfile.${{ matrix.os }}
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}