Docker Compose for Local FastAPI Stacks

Docker Compose turns your laptop into a reproducible, one-command datacenter. You declare Postgres, Redis, and your FastAPI service in a single YAML file; Compose builds the images, attaches a private bridge network, and boots the stack in dependency order. This eliminates "works on my machine" drift because every teammate gets the same versions and environment variables. The footgun is treating Compose like a production orchestrator or letting unnamed volumes and dangling images silently accumulate until they starve your disk.