From 6a1c8f870a0458f9dcace4110e25c177cc57bd23 Mon Sep 17 00:00:00 2001
From: Josh Creek <8179928+jcreek@users.noreply.github.com>
Date: Fri, 24 Jul 2026 21:21:32 +0100
Subject: [PATCH] build(#23): Publish multi-architecture container images

---
 .github/workflows/docker.yml  | 4 ++++
 .github/workflows/release.yml | 4 ++++
 README.md                     | 5 +++--
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 14e280c..44b84b7 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -18,6 +18,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v7
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v4
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4
 
@@ -36,6 +39,7 @@ jobs:
           context: .
           file: Dockerfile
           push: false
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e3b5b01..9bc9b2e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -59,6 +59,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v7
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v4
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v4
 
@@ -85,6 +88,7 @@ jobs:
           context: .
           file: Dockerfile
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
diff --git a/README.md b/README.md
index b1ad427..ef7c8ce 100644
--- a/README.md
+++ b/README.md
@@ -243,8 +243,9 @@ OpenNetworkDiagram/
 
 ### CI/CD
 
-- `docker.yml`: validates Docker build on pull requests.
-- `release.yml`: semantic release on `main` and Docker Hub publish for tagged releases.
+- `docker.yml`: validates AMD64 and ARM64 Docker builds on pull requests.
+- `release.yml`: semantic release on `main` and multi-platform Docker Hub publish for tagged releases.
+- Published images support AMD64 and 64-bit ARM (including Raspberry Pi systems); Docker selects the matching variant automatically.
 - Docker Hub image: [`jcreek23/open-network-diagram`](https://hub.docker.com/r/jcreek23/open-network-diagram)
 
 ## Contributing