From 0d36a273bb58ffd0172efacd828e7171d954b41c Mon Sep 17 00:00:00 2001
From: Paul Nothaft <paul@MacStudio-von-Paul.local>
Date: Wed, 7 Jan 2026 22:17:33 +0100
Subject: [PATCH] fix(ci): add QEMU setup for multi-arch builds and skip for
 PRs

- Add docker/setup-qemu-action for proper ARM64 emulation
- Skip QEMU setup for PR builds (amd64 only)
- Fix QEMU "Illegal instruction" errors during npm ci
---
 .github/workflows/docker-build.yml | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/docker-build.yml b/.github/workflows/docker-build.yml
index 482f3af1..23dc13c0 100644
--- a/.github/workflows/docker-build.yml
+++ b/.github/workflows/docker-build.yml
@@ -49,14 +49,20 @@ jobs:
         # For main/develop/tags, build multi-arch
         if [[ "${{ github.event_name }}" == "pull_request" ]]; then
           echo "platforms=linux/amd64" >> $GITHUB_OUTPUT
+          echo "skip_qemu=true" >> $GITHUB_OUTPUT
         else
           echo "platforms=linux/amd64,linux/arm64" >> $GITHUB_OUTPUT
+          echo "skip_qemu=false" >> $GITHUB_OUTPUT
         fi
 
+    - name: Set up QEMU
+      if: steps.platforms.outputs.skip_qemu != 'true'
+      uses: docker/setup-qemu-action@v3
+      with:
+        platforms: arm64
+
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
-      with:
-        platforms: ${{ steps.platforms.outputs.platforms }}
 
     - name: Log in to Container Registry
       if: github.event_name != 'pull_request' || github.event.inputs.push == 'true'
@@ -140,14 +146,20 @@ jobs:
         # For main/develop/tags, build multi-arch
         if [[ "${{ github.event_name }}" == "pull_request" ]]; then
           echo "platforms=linux/amd64" >> $GITHUB_OUTPUT
+          echo "skip_qemu=true" >> $GITHUB_OUTPUT
         else
           echo "platforms=linux/amd64,linux/arm64" >> $GITHUB_OUTPUT
+          echo "skip_qemu=false" >> $GITHUB_OUTPUT
         fi
 
+    - name: Set up QEMU
+      if: steps.platforms.outputs.skip_qemu != 'true'
+      uses: docker/setup-qemu-action@v3
+      with:
+        platforms: arm64
+
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
-      with:
-        platforms: ${{ steps.platforms.outputs.platforms }}
 
     - name: Log in to Container Registry
       if: github.event_name != 'pull_request' || github.event.inputs.push == 'true'