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Last active June 4, 2025 22:19
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[GUIDE] Starting a new Ruby on Rails project in docker
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gistfile1.md
  1. Initialize your project folder with git: git init
  2. Create (and commit) your project files with a temporary ruby image: docker run -it -v .:/rails ruby:3.2.2 /bin/bash cd /rails gem install rails rails new . exit
  3. Copy the Dockerfile into a new Dockerfile.dev
  4. Remove any "production", "precompile" instructions
  5. Test it with docker build Dockerfile.dev .
  6. Create a docker-compose.yml: version: "3" services: app: build: context: . dockerfile: Dockerfile.dev command: ./bin/rails server -b 0.0.0.0 ports: - "3000:3000" volumes: - .:/rails
  7. Configure the rails web console to work in docker in development.rb

    Allow IRB in browser for a docker environment

    config.web_console.permissions = '192.168.0.0/16'
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