Update continuos-release.yml

Author: Sapd

.github/workflows/continuos-release.yml

@@ -42,8 +42,8 @@ jobs:
             architecture: x86_64
             shell: pwsh
             build_type: msvc
-          # Linux
-          - os: ubuntu-latest
+          # Linux (use 20.04 for broader glibc compatibility in AppImage/packages)
+          - os: ubuntu-20.04
             os_name: linux
             architecture: x86_64
             shell: bash
@@ -64,6 +64,8 @@ jobs:
       - name: Install GCC 13 (Ubuntu)
         if: matrix.os_name == 'linux'
         run: |
+          # Add PPA for GCC 13 (needed on Ubuntu 20.04)
+          sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
           sudo apt-get update
           sudo apt-get install -y gcc-13 g++-13
           sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100
@@ -192,7 +194,8 @@ jobs:
 
           # Build AppImage - linuxdeploy automatically bundles libhidapi and other dependencies
           # Use --appimage-extract-and-run to avoid FUSE issues on GitHub Actions runners
-          ./linuxdeploy-x86_64.AppImage --appimage-extract-and-run \
+          # DEPLOY_LIBSTDCPP=1 bundles libstdc++ for compatibility with older systems
+          DEPLOY_LIBSTDCPP=1 ./linuxdeploy-x86_64.AppImage --appimage-extract-and-run \
             --appdir AppDir \
             --executable headsetcontrol \
             --desktop-file headsetcontrol.desktop \