pgAdmin4 web ldap authtification

Hello, my dears,

i can't get the LDAP login user to pgAdmin on the website. In Docker
Bash, I created the file config_local.py with the following content in
the “/var/lib/pgadmin” directory.
...
AUTHENTICATION_SOURCES = ['ldap','internal']
LDAP_SERVER_URI = 'ldap://<my-ip-address>:10389'
LDAP_USERNAME_ATTRIBUTE = 'uid'
LDAP_BASE_DN = 'uid=admin,ou=system'
LDAP_SEARCH_BASE_DN = 'uid=admin,ou=system'
...

Unfortunately, the content is not used after the container is
restarted. Why not?

Greetings from Stefan Harbich