How to connect to Mariadb in docker container from outside?

Question

MariaDB

Greetings.
There is a VPS on which I installed docker and MariaDB. Did according to this manual: https://netpoint-dc.com/blog/ustanovka-i-nastroika...
When trying to connect to the server IP on port 3306, a connection error is generated. Debian 10 system without any configuration. What the hoster issued on that volume and began to install. I have not made any settings for iptables and other things yet. I was not familiar with docker before. Tell me, please, what needs to be done to be able to connect to the database server from the outside?
NB For people with no experience with docker, please don't post your guesses. Thank you.

Answer 1

If you did everything according to the manual, then this part of the command
makes connections available only on the localhost:
try changing to
... -p 0.0.0.0:3306:3306 ...