About this Repo
This is the Git repo of the Docker official image for [rails] (https://registry.hub.docker.com/_/rails/) and mysql. See these page for the full readme on how to use this Docker image and for information regarding contributing and issues.
Pre-Requirements
First install docker, docker compose for your machine and start it. How this is done is very well documented all over the internet.
Run the project
You need generate the Rails skeleton app using docker-compose run:
$ docker-compose up
Enter app container
$ docker-compose exec -u user app bash
Connect the database
The app is now bootable, but you’re not quite there yet. By default, Rails expects a database to be running on localhost - so you need to point it at the mysql container instead. You also need to change the database and username to align with the defaults set by the mysql image.
Replace the contents of config/database.yml with the following:
default: &default
adapter: mysql2
encoding: utf8
pool: 5
username: root
password: "root"
host: mysql
development:
<<: *default
database: demo_development
test:
<<: *default
database: demo_test
That’s it. Your app should now be running on port 3000 on your Docker daemon. If you’re using Docker Machine, then docker-machine ip MACHINE_VM returns the Docker host IP address.
$ docker-machine ip default
192.168.99.100
To explore the database with PHPMyAdmin, browse on port 5000
To stop container then run following command:
$ docker-compose stop
Stopping ror_app_1 ... done
Stopping ror_mysql_1 ... done
To start container again then run following command:
$ docker-compose start
Starting dbdata ... done
Starting appdata ... done
Starting mysql ... done
Starting app ... done