ci: Multi-arch build experiment

Author: Alan Christie

.github/workflows/build.yaml

@@ -21,11 +21,9 @@ on:
   push:
 
 jobs:
-  build:
+  lint:
     runs-on: ubuntu-latest
     steps:
-    - name: Inject slug/short variables
-      uses: rlespinasse/github-slug-action@v5
     - name: Checkout
       uses: actions/checkout@v4
     - name: Lint Dockerfile
@@ -41,8 +39,21 @@ jobs:
         pip install --no-cache-dir poetry=='1.8.5'
         poetry install --no-root --no-directory --with dev
         poetry run pre-commit run --all-files
-    - name: Docker build
-      uses: docker/build-push-action@v6
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Inject slug/short variables
+      uses: rlespinasse/github-slug-action@v5
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+    - name: Build
+      uses: docker/build-push-action@v2
       with:
         context: .
+        platforms: linux/amd64,linux/arm64
         tags: ${{ github.repository_owner }}/squonk2-fastapi-ws-event-stream:${{ env.GITHUB_REF_SLUG }}

README.md

@@ -2,6 +2,8 @@
 
 [![build](https://github.com/InformaticsMatters/squonk2-fastapi-ws-event-stream/actions/workflows/build.yaml/badge.svg)](https://github.com/InformaticsMatters/squonk2-fastapi-ws-event-stream/actions/workflows/build.yaml)
 
+![Architecture](https://img.shields.io/badge/architecture-amd64%20%7C%20arm64-lightgrey)
+
 [![Conventional Commits](https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg)](https://conventionalcommits.org)
 [![pre-commit](https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white)](https://github.com/pre-commit/pre-commit)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)