Dependency-Track sample compose file with PostgreSQL - This doesn't take into account startup/timing to ensure PostgreSQL is ready to accept connections before Dependency-Track startups up.

docker-compose.yml

version: '3'
services:
  postgres10:
    environment:
    - POSTGRES_USER=dtrack
    - POSTGRES_PASSWORD=changeme
    image: 'postgres:10.5'
    volumes:
    - './postgres-data:/var/lib/postgresql/data'
  dtrack:
    environment:
    - ALPINE_DATABASE_MODE=external
    - ALPINE_DATABASE_URL=jdbc:postgresql://postgres10:5432/dtrack
    - ALPINE_DATABASE_DRIVER=org.postgresql.Driver
    - ALPINE_DATABASE_DRIVER_PATH=/extlib/postgresql-42.2.5.jar
    - ALPINE_DATABASE_USERNAME=dtrack
    - ALPINE_DATABASE_PASSWORD=changeme
    image: 'owasp/dependency-track'
    ports:
    - '80:8080'
    volumes:
    - './data:/data'
    depends_on:
      - postgres10