Add unix build script and add to samples CI

samples/PythonWXPython/build.bat

@@ -12,18 +12,21 @@ cd %~dp0
 echo.
 echo Installing dependencies
 uv sync
+if errorlevel 1 exit /b 1
 
 echo update_url = R"%~dp0releases" > _build_config.py
 
 echo.
 echo Building Python application
 uv run pyinstaller --onedir --windowed --noconfirm main.py
+if errorlevel 1 exit /b 1
 
 echo.
 echo Building Velopack Release v%~1
 mkdir publish 2>nul
 xcopy /E /I /Y dist\main\* publish\ >nul
 vpk pack --packId VelopackPythonSampleApp --mainExe main.exe -o releases --packDir publish --packVersion %*
+if errorlevel 1 exit /b 1
 
 echo.
 echo Cleaning up

samples/PythonWXPython/build.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+set -e
+
+# Find the absolute path of the script
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# Check if version parameter is provided
+if [ "$#" -lt 1 ]; then
+    echo "Version number is required."
+    echo "Usage: ./build.sh [version] [extra_args...]"
+    exit 1
+fi
+
+cd "$SCRIPT_DIR"
+
+# Installing dependencies
+echo ""
+echo "Installing dependencies..."
+uv sync
+
+# Generate build config
+# Note: In Python, we use r'' for raw strings. The path needs to be absolute.
+echo "update_url = r'$SCRIPT_DIR/releases'" > _build_config.py
+
+# Building Python application
+echo ""
+echo "Building Python application..."
+uv run pyinstaller --onedir --windowed --noconfirm main.py
+
+# Building Velopack Release
+echo ""
+echo "Building Velopack Release v$1..."
+mkdir -p publish
+cp -r dist/main/* publish/
+vpk pack --packId VelopackPythonSampleApp --mainExe main -o releases --packDir publish --packVersion "$@"
+
+# Cleaning up
+echo ""
+echo "Cleaning up..."
+rm -rf build
+rm -rf dist
+rm -rf publish
+rm -f main.spec
+
+echo "Done."