Is it possible to use custom icons for self-hosted websites such as localhost
You may try the solution listed here otherwise I would recommend adding your vote for this feature request upstream
For Vaultwarden you could add a custom file in the icon cache folder.
It should be
You can also add more and abuse the URI’s to show a different icon.
special-localhost.png, then you need to add
special-localhost as the first URI, and configure the
host to never be used for matching.
Then the second URI will be the one to match.
where can i find the folder? I use docker and portainer. In Portainer the vaultwarden container
It should be in the data folder you configured. It could be a volume. If that is the case, then i suggest to search the internet on how to manipulate those.