Fix .deb build: only build on tags, add PKGBUILD to release uploads

.gitea/workflows/build.yml

@@ -39,10 +39,11 @@ jobs:
         run: dotnet publish ADBulkTool.csproj -c Release -r ${{ matrix.rid }} --self-contained true -p:PublishSingleFile=true -p:IncludeNativeLibrariesForSelfExtract=true -o publish/${{ matrix.rid }}
 
       - name: Build .deb (linux-x64 only)
-        if: matrix.rid == 'linux-x64'
+        if: matrix.rid == 'linux-x64' && startsWith(github.ref, 'refs/tags/v')
         run: |
+          VERSION="${GITHUB_REF_NAME#v}"
           chmod +x packaging/build-deb.sh
-          packaging/build-deb.sh publish/linux-x64/ADBulkTool "${GITHUB_REF_NAME:-1.0.0}"
+          packaging/build-deb.sh publish/linux-x64/ADBulkTool "$VERSION"
 
       - name: Upload artifact
         uses: actions/upload-artifact@v4
@@ -97,3 +98,6 @@ jobs:
           upload "ADBulkTool-osx-x64/ADBulkTool" "ADBulkTool-macos-x64"
           upload "ADBulkTool-osx-arm64/ADBulkTool" "ADBulkTool-macos-arm64"
           upload "adbulktool_${VERS}_amd64.deb" "adbulktool_${VERS}_amd64.deb"
+          cp packaging/arch/PKGBUILD packaging/arch/.INSTALL .
+          upload "PKGBUILD" "PKGBUILD"
+          upload ".INSTALL" ".INSTALL"