Docker

docker run to Compose

Convert a working docker run command into a Compose service definition, with the traps flagged.

docker run command

Line continuations are fine. Quoted values keep their spaces.

Examples

compose.yaml

postgres:16-alpine

services:
  db:
    image: "postgres:16-alpine"
    container_name: db
    ports:
      - "5432:5432"
    volumes:
      - "pgdata:/var/lib/postgresql/data"
    environment:
      POSTGRES_PASSWORD: secret
      POSTGRES_DB: app
    restart: unless-stopped

volumes:
  pgdata:

Info
Port mappings are quoted. Unquoted, YAML 1.1 reads "8080:80" as a sexagesimal number — a long-standing Compose trap.
Medium
A credential appears to be passed inline. Move it to an env_file that is git-ignored, or to a secrets mechanism — `docker inspect` exposes inline environment to anyone with daemon access.
Info
-d is not carried over: `docker compose up -d` controls that at the command line.