Test build multiarch

.github/workflows/build-appimage.yml

@@ -16,17 +16,14 @@ jobs:
       matrix:
         include:
         - os: ubuntu-latest
-          platform: Linux
-          arch:
-            - x86_64
+          arch: x86_64
         - os: ubuntu-latest
-          arch:
-            - aarch64
+          arch: aarch64
     steps:
     - uses: actions/checkout@v4
     - name: Build AppImage
       run: |
-        docker build -t appimage-builder --build-arg="ARCHITECTURE=${{ matrix.arch }}" . -f burrow-gtk/build-aux/Dockerfile
+        docker build -t appimage-builder --build-arg="TARGET_ARCHITECTURE=${{ matrix.arch }}" . -f burrow-gtk/build-aux/Dockerfile
         docker create --name temp appimage-builder
         docker cp temp:/app/burrow-gtk/build-appimage/Burrow-x86_64.AppImage .
         docker rm temp