You can take a look at how the phoenix framework uses earthly to simplify their builds. They are testing across OTP versions and across different databases (mys

You can take a look at how the phoenix framework uses earthly to simplify their builds. They are testing across OTP versions and across different databases (mysql, SQL Server, postgres) all in an earthfile[1]. Ecto_sql does something similar[2]. [1] https://phoenixframework.org/blog/improving-testing-and-continuous-integration-in-phoenix https://phoenixframework.org/blog/improving-testing-and-cont... [2] https://github.com/elixir-ecto/ecto_sql/blob/master/Earthfile https://github.com/elixir-ecto/ecto_sql/blob/master/Earthfil...