class Dockerize
Public Class Methods
dockercompose()
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# File lib/dockerize-ruby.rb, line 23 def self.dockercompose File.open("docker-compose.yml", 'w') do |file| file.write """version: \"3.9\" services: db: image: postgres volumes: - ./tmp/db:/var/lib/postgresql/data environment: POSTGRES_PASSWORD: password web: build: . command: bash -c \"rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'\" volumes: - .:/myapp ports: - \"3000:3000\" depends_on: - db""" end end
dockerfile()
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# File lib/dockerize-ruby.rb, line 2 def self.dockerfile File.open("Dockerfile", 'w') do |file| file.write """# syntax=docker/dockerfile:1 FROM ruby:2.5 RUN apt-get update -qq && apt-get install -y nodejs postgresql-client WORKDIR /myapp COPY Gemfile /myapp/Gemfile COPY Gemfile.lock /myapp/Gemfile.lock RUN bundle install # Add a script to be executed every time the container starts. COPY entrypoint.sh /usr/bin/ RUN chmod +x /usr/bin/entrypoint.sh ENTRYPOINT [\"entrypoint.sh\"] EXPOSE 3000 # Configure the main process to run when running the image CMD [\"rails\", \"server\", \"-b\", \"0.0.0.0\"]""" end end
entrypoint()
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# File lib/dockerize-ruby.rb, line 45 def self.entrypoint File.open("entrypoint.sh", 'w') do |file| file.write """#!/bin/bash set -e # Remove a potentially pre-existing server.pid for Rails. rm -f /myapp/tmp/pids/server.pid # Then exec the container's main process (what's set as CMD in the Dockerfile). exec \"$@\"""" end end