Can more services like Postgres and/or Redis be added?

[yorsant]

I have seen these two other alternatives to creating a Rails app using Docker.

• https://github.com/nickjj/docker-rails-example
• https://github.com/templatus/templatus-hotwire

I like the simplicity of docked, but it is not very helpful once your app needs Postgres, Redis, or any other external requirement.

Are you planning to extend docked?

[ginzunza]

I believe you have to use docker-compose for that necessity. This is an example:

version: '3.4'
services:
  web:
    image: "ghcr.io/rails/cli:latest"
    command: /bin/bash -c "rm -f /tmp/server.pid && bundle exec rails server -b 0.0.0.0 -P /tmp/server.pid"
    env_file: .env
    ports:
      - 3000:3000
    depends_on:
      - db
      - redis
    volumes:
      - .:/rails
      - ruby-bundle-cache:/bundle
    tty: true
    stdin_open: true

  redis:
    image: "redis:7-alpine"
    ports:
      - 6379
    volumes:
    - ./tmp/redis_data:/var/lib/redis/data

  db:
    image: postgres
    restart: always
    ports:
      - 5432:5432
    volumes:
      - ./tmp/postgres_data:/var/lib/postgresql/data

volumes:
  ruby-bundle-cache:
    external: true

This is a post with the entire explanation.

[yorsant]

It would be nice to add some instructions to the readme.

[ginzunza]

Hi, @yorsant if you have any additional questions let me know. Regarding the instructions, if you are at the root of your rails project you have to create a file called docker-compose.yml with the information above. After that, you have to execute the following command to start rails: docker-compose up. Don't forget to add a .env file with the Redis and Postgres credentials.

[durierem]

Setting up Rails for the first time with all the dependencies necessary can be daunting for beginners.

The README outlines that docked is intended for beginners and as such I think it should stick to default options and dependencies that you get when running rails new.

Providing a dockerised Rails development environment that covers most cases and fits everyone's needs is nearly impossible without sacrificing this simplicity.

[dhh]

What @durierem said.