Added
* Add documentation for `SERVER_ALLOW_HEADERS` config option.
* Supports for header 'Access-Control-Allow-Headers'='Authorization' in OPTIONS method,
is required if the request has an Authorization header (04/04/2023, contribution from TANK2003)
Fixed
* Docker: Fix removing Xvfb lock file when running with `QGSRV_USER`
- Display comprehensive message when attempting to restart container
started with `--user` option.
* Changed '/ows/catalog' default entry point to '/catalog'
* Use request path when logging QGIS request.