Add linux arm matrix build

.github/workflows/build.yml

@@ -111,4 +111,48 @@ jobs:
       uses: actions/upload-artifact@v4
       with:
         name: standalone_win
-        path: dist
+        path: dist
+
+  pyinstaller_linux:
+    runs-on: ubuntu-22.04
+    name: Build pyinstaller package on ${{ matrix.arch }}
+
+    strategy:
+      matrix:
+        include:
+          - arch: aarch64
+          - arch: armv7
+          - arch: armv6
+    steps:
+      - name: Download complete distribution
+        uses: actions/download-artifact@v4
+        with:
+          name: camillagui-backend
+      - uses: uraimo/run-on-arch-action@v2
+        name: Build artifact
+        id: build
+        with:
+          arch: ${{ matrix.arch }}
+          distro: ubuntu22.04
+
+          # Mount the artifacts directory as /artifacts in the container
+          dockerRunArgs: |
+            --volume "${PWD}:/cdsp"
+          install: |
+            apt-get update -q -y
+            add-apt-repository ppa:deadsnakes/ppa -y
+            apt update
+            apt install python3.12 -y
+          # 
+          # Produce a binary artifact and place it in the mounted volume
+          run: |
+            python3.12 -m pip install -r requirements.txt
+            python3.12 -m pip install pyinstaller
+            cd cdsp
+            pyinstaller .\main.py --add-data .\config\:config --add-data .\build\:build --collect-data camilladsp_plot --name camillagui_backend
+
+      - name: Upload build
+        uses: actions/upload-artifact@v4
+        with:
+          name: standalone_linux_${{ matrix.arch }}
+          path: dist