Add multi-platform support (linux/amd64, linux/arm64)

Author: Zeus-Castillo

.github/workflows/docker-publish.yml

@@ -1,24 +1,19 @@
 name: Build and publish Docker image
-
 # Executes automatically when pushing to master
 on:
   push:
     branches: ['master']
-
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}
-
 jobs:
   build-and-push-image:
     runs-on: ubuntu-latest
-
     permissions:
       contents: read
       packages: write
       attestations: write
       id-token: write
-
     steps:
       - name: Checkout repository
         uses: actions/checkout@v5
@@ -36,12 +31,16 @@ jobs:
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Build and push Docker image
         id: push
         uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
         with:
           context: ./code-generator
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
@@ -50,4 +49,4 @@ jobs:
         with:
           subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           subject-digest: ${{ steps.push.outputs.digest }}
-          push-to-registry: true
+          push-to-registry: true