Problem with installation and configuration of Nextcloud on Portainer (OpenMediaVault machine) with already configured nginx/duckdns

Edit:

Found it!

I have found the solution here:

https://help.nextcloud.com/t/s…c-client-on-linux/47549/4

I have added these lines to my config.php file:

'overwrite.cli.url' => 'https://nextcloud.domainname.dnsprovider.org',
'overwriteprotocol' => 'https',
'overwritehost' => 'nextcloud.domainname.dnsprovider.org',
'trusted_proxies' =>
array (
 0 => '1.2.3.4',
),

And it is loading now.

It is working also in both configurations:

'trusted_domains' =>
array (
 0 => '1.2.3.4:1234',
 1 => 'nextcloud.domainname.dnsprovider.org',
),

and:

'trusted_domains' =>
array (
 0 => '1.2.3.4:1234',
),

and also without this variable:

'trusted_proxies' =>
array (
 0 => '1.2.3.4',
),

Not sure which configuration is 100% correct (or which entires are 100% required) but at least it is working, also on my Android phone :)