Trying to install egroupware-docker with postgresql.
I installed egroupware-docker (which comes with mariadb)
then changed header.inc.php as per my database config.
and restarted egw.
Now i am getting 502 Bad Gateway error.
Your database is working, but you don’t have any applications installed (pgsql://egxxx:firstname.lastname@example.org/egroupware). Use --install to install EGroupware
Installation failed --> exiting!
I am not able to understand the advice " use --install … "
please guide to solve this issue.