Change the password of the web session into the browser ?

[Almaric78]

Hello,
Do you know how to change the password for the web logging into a shell ? It is not possible to type password or passwd in a terminal, the window is automatically minimized. How it works ? Is it a special protection ? And when I use the docker console, it changes the root password but nothing happens when I reload the page into the web browser.. It is still the same password.
PS : I don't want to redeploy the container with VNC_PASSWORD=mypassword if it is possible.
Thanks for this good work 👍