Add SSL Support

[reynoldsalec]

Although there isn't a security reason per say, having SSL enabled would be a nice-to-have so users don't need to click through browser warnings.

I thought adding the following to the builder should work but it doesn't appear to:

options.ssl = true;
options.sslExpose = false;

[AaronFeledy]

This works in my landofile:

services:
  pma:
    type: phpmyadmin
    ssl: true
    sslExpose: false
proxy:
  pma:
    - pma.mysite.lndo.site

[AaronFeledy]

To set it in the builder, you have to do that service merge thing. I did this exact thing in the mailpit plugin.