feat: build both AMD64 and ARM64 (#11)

* feat: build both AMD64 and ARM64

* chore: update the workflow to allow building images on PRs

Author: p5

.github/workflows/build_rechunk.yml

@@ -1,12 +1,16 @@
 name: Publish rechunk to GHCR
 
 on:
+  pull_request:
+    paths:
+      - "./Dockerfile"
+      - "./.github/workflows/build_rechunk.yml"
   workflow_dispatch:
     inputs:
       tag:
-        description: 'The version to tag the package with:'
+        description: "The version to tag the package with:"
         required: true
-    
+
   release:
     types: [published]
 
@@ -24,12 +28,23 @@ jobs:
 
     steps:
       - name: Login to GHCR
+        if: github.event_name == 'workflow_dispatch' || github.event_name == 'release'
         run: echo "${{ secrets.GITHUB_TOKEN }}" | sudo podman login ghcr.io -u ${{ github.actor }} --password-stdin
-      - uses: actions/checkout@v3
+
+      - uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
       - name: Build Image
         run: |
-          sudo podman build --tag 'fedora_build' .
+          sudo podman build \
+            --tag 'fedora_build' \
+            --platform 'linux/amd64,linux/arm64' \
+            .
+
       - name: Upload Image
+        if: github.event_name == 'workflow_dispatch' || github.event_name == 'release'
         id: upload
         shell: bash
         run: |
@@ -48,4 +63,3 @@ jobs:
           sudo podman push ghcr.io/hhd-dev/rechunk:stable
           sudo podman tag fedora_build ghcr.io/hhd-dev/rechunk:$VERSION
           sudo podman push ghcr.io/hhd-dev/rechunk:$VERSION
-