Use custom port

[Vadim-Zenin]

Hello,

Feature request:

Could be possible to use custom port instead of 3306 please?
The custom port number could be specified in env MYSQL_PORT for example.

[wglambert]

What would be the reasons for wanting a variable for setting this, you can provide your own config https://github.com/docker-library/docs/tree/master/mariadb#using-a-custom-mysql-configuration-file

[tianon]

Indeed -- the simplest way to accomplish the specific configuration you're asking for is the --port flag to the daemon:

$ docker run ... mariadb:xxx --port 3307
...
Version: 'xxx'  socket: '/var/run/mysqld/mysqld.sock'  port: 3307  mariadb.org binary distribution

[yosifkit]

Apparently MariaDB also just supports a environment value for this directly:

$ docker run -it --rm mariadb --verbose --help
...
  -P, --port=#        Port number to use for connection or 0 to default to,
                      my.cnf, $MYSQL_TCP_PORT, /etc/services, built-in default
                      (3306), whatever comes first