Make the multisite docker container more portable

[ktbartholomew]

The current multisite container depends on the blog's hostname being docker, which just happens to be the hostname alias I use for my local Docker instance. I think the experience of having a working multisite install is very valuable though, so I'd like to preserve that if possible.

It may be necessary to add a command that runs when the container starts to update the wp_blogs table with a hostname defined by an environment variable.

[samzechariah]

hi sir, I downloaded this plugin and pasted it in WordPress plugin directory but it's not working.