Testcontainer(s) for Gleam: yes, without the 's' : what it is, how it works, why it exists

I built testcontainers for Gleam and the name was already taken. Twice. Let me start with the name, because it tells you everything. The canonical testcontainers library for the JVM ecosystem is called testcontainers . There is also one for Elixir, and it is called testcontainers . Then someone built a Gleam wrapper around the Elixir one and published it as testcontainers_gleam . By the time I showed up wanting to build something native for Gleam, both testcontainers and testcontainers_gleam wer