Some codex integration tests support a running against a remote executor. This means that when CODEX_TEST_REMOTE_ENV environment variable is set they will attempt to start an executor process in a docker container CODEX_TEST_REMOTE_ENV points to and use it in tests.
Docker container is built and initialized via./scripts/test-remote-env.sh
Currently running remote tests is only supported on Linux, so you need to use a devbox to run them
You can list devboxes via applied_devbox ls, pick the one with codex in the name. Connect to devbox via ssh <devbox_name>. Reuse the same checkout of codex in ~/code/codex. Reset files if needed. Multiple checkouts take longer to build and take up more space. Check whether the SHA and modified files are in sync between remote and local.