In my case, I use Postgres and Kafka for my integration tests.
I requested that Codex find an alternative to the container method. After a while, it found a way to install and run those services. Based on that, I requested a markdown file with those steps, and I added those instructions to the AGENTS.md file.
Now, when I request something to Codex I add something like: check the results with the integration tests, to run them, follow the steps in the AGENTS.md file.