Sample .env.development and docker-compose.yml file for Hanami in development mode using Docker

.env.development

# Define ENV variables for development environment
DATABASE_URL='postgres://postgres:@db:5432/yourapp_development'
SERVE_STATIC_ASSETS="true"
WEB_SESSIONS_SECRET="d31b874186058eb00e17d9cde98e3745408b10666112a401a05a0d7ab392d30c"

docker-compose.yml

version: '2.3'
services:
  db:
    image: postgres:10
    # command: pg_createcluster --start 9.4 postgres
    # user: postgres
    mem_limit: 192m
    volumes:
      - conv-pg-data:/var/lib/postgresql/data
    ports:
      - "5432:5432"
  web:
    build: .
    image: you/yourapp:dev-8-20180225
    # command: bin/shotgun -p 3000 -o 0.0.0.0 config.ru
    command: bin/hanami server --host=0.0.0.0
    mem_limit: 256m
    environment:
      - DOCKERISED=true
      # - RUBYOPT='-W1 -Ispec'
    volumes:
      - .:/app
    ports:
      - "80:2300"
    depends_on:
      - db

volumes:
  yourapp-pg-data: