build: fix stabdalone entry of pyinstaller

Author: rexzhang

asgi-webdav.spec

@@ -0,0 +1,22 @@
+# How to use PyInstaller to package the project
+
+## Installation Dependencies
+
+```bash
+pip install -r requirements.d/full.txt
+pip install pyinstaller
+```
+
+## Build Executable File
+
+```shell
+pyinstaller --onefile --console \
+    --name asgi-webdav \
+    standalone.py
+```
+
+## Run It
+
+```shell
+./dist/asgi-webdav -r .
+```

docs/howto/howto-pyinstaller.en.md

@@ -4,7 +4,6 @@
 -r mkdocs.txt
 -r pypi.txt
 -r docker.txt
-pyinstaller
 
 # dev
 -r test.txt

requirements.d/dev.txt

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+
+"""
+The standalone entry point.
+
+please visit docs/howto/howto-pyinstaller.en.md for more information.
+"""
+
+
+from asgi_webdav.cli import main as cli_main
+
+
+def main() -> None:
+    import sys
+
+    try:
+        sys.exit(cli_main())
+
+    except KeyboardInterrupt:
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()