Fix the build workflow

{{ cookiecutter.project_slug }}/.github/workflows/build.yml

@@ -4,12 +4,12 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - master
+      - main
     tags:
       - v*
   pull_request:
     branches:
-      - master
+      - main
 
 env:
   REGISTRY: ghcr.io
@@ -19,11 +19,14 @@ jobs:
   build:
     name: Build the Docker image
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
     steps:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Log in to Container Registry
-      uses: docker/login-action@2
+      uses: docker/login-action@v3
       with:
         registry: ${{ env.REGISTRY }}
         username: ${{ github.actor }}
@@ -41,6 +44,7 @@ jobs:
       with:
         context: .
         target: prod
+        platforms: linux/amd64,linux/arm64
         push: ${{ github.event_name != 'pull_request' }}
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}