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DOCKER.md

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Development setup using Docker

Warning

This is meant for advanced users already familiar with Docker. If you're looking for general development instructions, please see README.md.

Initial setup

The following commands should just be run for the initial setup only. Rebuilding the docker images is only necessary when upgrading, if there are changes to the Dockerfile, or if gems or npm packages have been added or updated.

  1. Install Docker Community Edition if it is not already installed, or you can try Orbstack or colima if you're using a Mac.
  2. Clone the respository to your local machine and change into the application directory: cd circulate.
  3. Run docker-compose up -d database to start the database service.
  4. Run docker-compose run --rm web rails db:reset to create the dev and test databases, load the schema, and run the seeds file.
  5. Run docker-compose up -d to start all the remaining services.
  6. Run docker-compose ps to view status of the containers. All should have state "Up". Check the logs if there are any containers that did not start.
  7. The web application will be available at localhost:3000.

For ongoing development:

  1. Run docker-compose up -d to start all services.
  2. Run docker-compose up -d --force-recreate to start services with new containers.
  3. Run docker-compose up -d --force-recreate web to start a container running the new image.
  4. Run docker-compose ps to view status of containers.
  5. Run docker-compose stop to stop all services.
  6. Run docker-compose rm <service> to remove a stopped container.
  7. Run docker-compose rm -f <service> to force remove a stopped container.
  8. Run docker-compose restart web to restart the web server.
  9. Run docker-compose down -v to stop and remove all containers, as well as volumes and networks. This command is helpful if you want to start with a clean slate. However, it will completely remove the database and you will need to go through the database setup steps again above.

Running commands

In order to run rake tasks, rails generators, bundle commands, etc., they need to be run inside the container:

$ docker-compose exec web rails db:migrate

If you do not have the web container running, you can run a command in a one-off container:

$ docker-compose run --rm web bundle install

However, when using a one-off container, make sure the image is up-to-date by running docker-compose build web first. If you have been making gem updates to your container without rebuilding the image, then the one-off container will be out of date.

Viewing logs

To view the logs, run:

$ docker-compose logs -f <service>

For example:

$ docker-compose logs -f web

Accessing services

Postgres database

$ docker-compose exec database psql -h database -Upostgres circulate_development

Rails console

$ docker-compose exec web rails c

Testing Suite

Run the unit testing suite from within the container:

$ docker-compose exec web rails test

NOTE: System tests are not currently set up with docker.

Run one test with:

$ docker-compose exec web rails test <filepath>