Add CUDA to Flatpak (#218)

.github/workflows/CI.yml

@@ -159,38 +159,21 @@ jobs:
 
   build_linux_flatpak:
     name: Linux Flatpak
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     needs: check_changelog
 
     steps:
-      - name: Maximize build space
-        uses: easimon/maximize-build-space@master
-        with:
-          root-reserve-mb: 2048
-          swap-size-mb: 8192
-          remove-dotnet: 'true'
-          remove-android: 'true'
-          remove-haskell: 'true'
-
-      - name: Cache flatpak-builder
-        uses: actions/cache@v3
-        with:
-          path: ./build/.flatpak-builder/build
-          key: ${{ runner.os }}-flatpak-builder
-
       - name: Checkout
         uses: actions/checkout@v3
 
       - name: Setup Dependencies Linux Flatpak
         run: |
-          sudo add-apt-repository ppa:flatpak/stable -y
           sudo apt-get update -y
           sudo apt-get install -y \
               cmake \
-              flatpak \
-              flatpak-builder
-          sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
-          sudo flatpak install flathub org.freedesktop.Platform//21.08 org.freedesktop.Sdk//21.08 -y
+              flatpak
+          sudo su $(whoami) -c 'flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo'
+          sudo su $(whoami) -c 'flatpak install --user flathub org.flatpak.Builder org.freedesktop.Platform//21.08 org.freedesktop.Sdk//21.08 -y'
 
       - name: Configure Flatpak Manifest
         run: |
@@ -222,9 +205,8 @@ jobs:
       - name: Build Linux Flatpak
         working-directory: build
         run: |
-          sudo flatpak-builder build-dir com.github.sunshinestream.sunshine.yml
-          sudo flatpak-builder --repo=repo --force-clean build-dir com.github.sunshinestream.sunshine.yml
-          sudo flatpak build-bundle ./repo ../artifacts/sunshine.flatpak com.github.sunshinestream.sunshine
+          sudo su $(whoami) -c 'flatpak run org.flatpak.Builder --repo=repo --force-clean build-sunshine com.github.sunshinestream.sunshine.yml'
+          sudo su $(whoami) -c 'flatpak build-bundle ./repo ../artifacts/sunshine.flatpak com.github.sunshinestream.sunshine'
 
       - name: Upload Artifacts
         uses: actions/upload-artifact@v3