The existing docker-compose.yml (Postgres + Redis) was imported
via type: compose in berth.project.yaml. Berth
attached both services to berth-net with no changes to the
original file. This page is served by a type: static nginx container.
db — Postgres 16 on legacyapp-db:5432
cache — Redis 7 on legacyapp-cache:6379
web — nginx static at https://app.legacyapp.test