• Move comemnt above
• See if settings are actually getting applied here (try useSSL=true or some obvious setting)
• If the settings aren't getting passed through to the driver then we should set them in a mysql cnf override file as specified in docs (https://java.testcontainers.org/modules/databases/mysql/)
• Find out what is the default MySQL test container version and add that as either a comment or explicit
• Write docs if we figure out how to actually get into the test container

• Test whether we can override configuration via env variables and system properties
  • export DATASOURCE_URL =
  • grails -DdataSource.url= test-app
• If it doesn't work, then we need to do some passthrough shinanegans with gradle to make it work properly https://stackoverflow.com/questions/28196042/how-override-grails-configuration-from-command-line

With the config I want to

1. make it work out of the box without any changes
2. use passthrough in build.gradle
3. do something like this in application.yml

config:
    property: System.get("config.property", defaultValue)

I would prefer 1 or 2, and would like to stay away from 3 like the plague because it would require a code change to application.yml every time we add a new property.