Starter setup to create a Rails project using docker
Most of this setup was taken from the Docker Compose Documentation.
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The first thing to do is clone this project.
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Then copy the files:
docker-compose.yml,Dockerfile,GemfileandGemfile.lockto another folder. Put the name of your app as the name of the folder. -
Using your terminal (or Docker Terminal if you are in Windows) navigate to the new folder and generate the Rails skeleton app:
docker-compose run web rails new . --force --database=postgresql -
Then build the image
docker-compose build -
Now we have to update Rails so it points to out docker postgres image. Replace the contents of
config/database.ymlwith:
default: &default
adapter: postgresql
encoding: unicode
host: db
username: postgres
password:
pool: 5
development:
<<: *default
database: <NAME-OF-YOUR-APP>_development
test:
<<: *default
database: <NAME-OF-YOUR-APP>_testWhere <NAME-OF-YOUR-APP> is the name you used in the second step.
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Finally, boot the app with:
docker-compose upAnd go to http://localhost:3000 to find Rails' Welcome Page (if you are using Docker Machine you'll need to go to
http://<IP-OF-YOUR-DOCKER-MACHINE>:3000)
The docker image you are creating should already have Yarn installed. For instance, if you would like to install JQuery, then you'd run (after running docker-compose up):
docker-compose exec web yarn add jquery
However, be aware that you still need to add these libraries in the application.js file.
Some sites that might be helpful once your Rails+Docker project is generated.