91 lines
2.4 KiB
Markdown
91 lines
2.4 KiB
Markdown
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## Compose sample application
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### Rails application in dev mode
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Project structure:
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```
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.
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├── app
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├── docker-compose.yml
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├── Dockerfile
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├── Gemfile
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├── othres dir and files
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```
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[_docker-compose.yml_](docker-compose.yml)
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```
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version: '2'
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services:
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db:
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image: postgres
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volumes:
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- ./tmp/db:/var/lib/postgresql/data
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...
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web:
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build: .
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volumes:
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- .:/myapp
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ports:
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- "3000:3000"
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...
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```
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## Deploy with docker-compose
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```
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$ docker-compose up -d
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Creating network "ruby_on_rails-postgres_default" with the default driver
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Building web
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Step 1/14 : FROM ruby:2.6.5
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2.6.5: Pulling from library/ruby
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...
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Creating ruby_on_rails-postgres_db_1_a0b42e5fc001 ... done
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Creating ruby_on_rails-postgres_web_1_3da9a09cebff ... done
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```
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## Expected result
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Listing containers must show two containers running and the port mapping as below:
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```
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$ docker ps
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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dac525a7e7f9 ruby_on_rails-postgres_web "entrypoint.sh bash …" 49 seconds ago Up 42 seconds 0.0.0.0:3000->3000/tcp ruby_on_rails-postgres_web_1_cfc51eb65add
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760e6b3dc241 postgres "docker-entrypoint.s…" 55 seconds ago Up 49 seconds 5432/tcp ruby_on_rails-postgres_db_1_85be421b80ec
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```
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## Use docker rails with bash and execute rails server
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```
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$ docker-compose exec web bash
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root@dac525a7e7f9:/myapp#
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```
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## How execute rails server
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```
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root@dac525a7e7f9:/myapp# bundle exec rails s -b 0.0.0.0
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=> Booting Puma
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=> Rails 6.0.2.2 application starting in development
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=> Run `rails server --help` for more startup options
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Puma starting in single mode...
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* Version 4.3.3 (ruby 2.6.5-p114), codename: Mysterious Traveller
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* Min threads: 5, max threads: 5
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* Environment: development
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* Listening on tcp://0.0.0.0:3000
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Use Ctrl-C to stop
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```
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After the application starts, navigate to `http://localhost:3000` in your web browser
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For stop server `CTRL + C`
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## Stop and remove the containers
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```
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root@dac525a7e7f9:/myapp# exit
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exit
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$ docker-compose down
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Stopping ruby_on_rails-postgres_web_1_43d10612c395 ... done
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Stopping ruby_on_rails-postgres_db_1_13519c5de2a7 ... done
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Removing ruby_on_rails-postgres_web_1_43d10612c395 ... done
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Removing ruby_on_rails-postgres_db_1_13519c5de2a7 ... done
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Removing network ruby_on_rails-postgres_default
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```
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