Fix missing database user for Wordpress service (#2824)
Fix missing database user for Wordpress service (#2824)

* Fix missing database user for Wordpress service

It defaults to root if not specified. https://hub.docker.com/_/wordpress/

* Change root password to avoid confusion.

londoncalling/docker.github.io,shin-/docker.github.io,phiroict/docker,shubheksha/docker.github.io,shin-/docker.github.io,londoncalling/docker.github.io,JimGalasyn/docker.github.io,londoncalling/docker.github.io,bdwill/docker.github.io,JimGalasyn/docker.github.io,shin-/docker.github.io,shubheksha/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,phiroict/docker,JimGalasyn/docker.github.io,shin-/docker.github.io,londoncalling/docker.github.io,anweiss/docker.github.io,thaJeztah/docker.github.io,joeuo/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,johnstep/docker.github.io,anweiss/docker.github.io,phiroict/docker,docker/docker.github.io,joeuo/docker.github.io,phiroict/docker,phiroict/docker,docker/docker.github.io,joeuo/docker.github.io,shin-/docker.github.io,londoncalling/docker.github.io,bdwill/docker.github.io,bdwill/docker.github.io,thaJeztah/docker.github.io,bdwill/docker.github.io,anweiss/docker.github.io,JimGalasyn/docker.github.io,shubheksha/docker.github.io,anweiss/docker.github.io,joeuo/docker.github.io,joeuo/docker.github.io,johnstep/docker.github.io,shubheksha/docker.github.io,docker/docker.github.io,johnstep/docker.github.io,johnstep/docker.github.io,thaJeztah/docker.github.io,bdwill/docker.github.io,JimGalasyn/docker.github.io,shubheksha/docker.github.io,johnstep/docker.github.io,anweiss/docker.github.io