nakazawaken1/rails6docker

rails6 on docker

how to create rails6 environment

require files

rails6/
	.dcokerignore
	docker-compose.yml
	Dockerfile
	Gemfile

.dockerignore

.git
.rspec
log
tmp
vender/assets
node_modules

docker-compose.yml

version: '3'
services:
db:
	image: postgres
	volumes:
		- ./tmp/db:/var/lib/postgresql/data
web:
	build: .
	volumes:
		- .:/opt/myapp
	ports:
		- "3333:3000"
	depends_on:
		- db

Dockerfile

FROM ruby:2.7
ENV LANG=C.UTF-8 \
	TZ='Asia/Tokyo' \
	APP_DIR=/opt/myapp
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \
	&& echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \
	&& apt-get update -qq && apt-get install -y --no-install-recommends nodejs postgresql-client yarn
WORKDIR $APP_DIR
COPY Gemfile* $APP_DIR/
RUN bundle install
COPY . $APP_DIR
CMD set -e && rm -f tmp/pids/server.pid && rails server -b 0.0.0.0

Gemfile

source 'https://rubygems.org'
gem 'rails', '~>6'

operations

create folder

mkdir rails6

make 4 files

cd rails6
vi .dockerignore
vi docker-compose.yml
vi Dockerfile
vi Gemfile

create rails project

docker-compose run web rails new . --force --no-deps --database=postgresql

configure database

add 3 lines to config/database.yml default: section

default: &default
	host: db
	username: postgres
	password:

build docker images

docker-compose build

create database

docker-compose run web rake db:create

start docker

docker-compose up

view in browser

http://localhost:3333

exit containers

CTRL+C