ci: rewrite for Linux cross-compilation (EXE only)

.gitea/workflows/build.yaml

@@ -1,4 +1,4 @@
-name: Build and Release Windows Client
+name: Build and Release Windows Client (Linux Cross-Compile)
 
 on:
   push:
@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    runs-on: windows-latest
+    runs-on: ubuntu-latest
 
     steps:
       - name: Checkout code
@@ -15,38 +15,20 @@ jobs:
 
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: x86_64-pc-windows-msvc
 
-      - name: Install LLVM
-        run: choco install llvm --no-progress
+      - name: Install Mingw-w64 for linking
+        run: sudo apt-get update && sudo apt-get install -y mingw-w64
 
-      - name: Build Client
+      - name: Build Client (Cross-Compile)
         working-directory: ./client
-        run: cargo build --release
-
-      - name: Prepare Binaries for Installer
-        shell: pwsh
-        run: |
-          New-Item -ItemType Directory -Force -Path bin
-          Copy-Item "client/target/release/meshvpn-client.exe" "bin/client.exe"
-          # Download Wintun.dll as it is a driver binary not stored in git
-          Invoke-WebRequest -Uri "https://github.com/WireGuard/wintun/releases/latest/download/wintun.dll" -OutFile "bin/wintun.dll"
-
-      - name: Install WiX Toolset
-        run: choco install wixtoolset --no-progress
-
-      - name: Build MSI Installer
-        shell: pwsh
-        run: |
-          # candle.exe compiles .wxs to .wixobj
-          # light.exe links .wixobj to .msi
-          candle.exe installer/product.wxs -o installer/product.wixobj
-          light.exe installer/product.wixobj -o meshvpn-client.msi
+        run: cargo build --release --target x86_64-pc-windows-msvc
 
       - name: Create Gitea Release
         uses: softprops/action-gh-release@v1
         with:
           files: |
-            client/target/release/meshvpn-client.exe
-            meshvpn-client.msi
+            client/target/x86_64-pc-windows-msvc/release/meshvpn-client.exe
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}