Unable to access phpMyAdmin

[DigitalSolace]

Assistance greatly appreciated. Apologies if this in not the right forum to ask
I have a phpmyadmin container running on 8090:80 yet am unable access using http://server_ip:8090 .
Using phpmyadmin version 4.6.4 mysql 5.7 drupal 8.2.1 and php 7.0.1
docker ps -a shows the phpmyadmin container is up and running and linked to the mysql server
What am i missing?

[nijel]

Either use phpmyadmin_ip:80 or localhost:8090

[DigitalSolace]

Thanks Nijel, that's just the thing, neither of those work...
drupal server is running on: http://41.79.78.255:8080/
phpmyadmin not working on: http://41.79.78.255:8090/

[DigitalSolace]

Solved - this was a combination of the cloud service provider blocking ports and setting the PMA_HOST variable to the ip address of the MYSQL container found in docker inspect.