docker-rails-bootstrap

An opinionated docker-compose setup for Rails apps.

Currently includes ruby 3.1.1, postgres 14, redis 6, node 16, sidekiq, mailhog and pgweb.

This setup was created for development.

Requirements

• docker
• docker-compose

Due to conflicts in user permissions, you will need to add the following lines in you ~/.bashrc or equivalent:

export UID=$(id -u) 2> /dev/null
export GID=$(id -g)

Usage

Creating new Rails applications

You don't need ruby installed in your local machine to create new applications. Create your next one using:

git clone https://github.com/jweslley/docker-rails-bootstrap myapp
cd myapp
./bootstrap.sh
docker-compose up

Setting up existing Rails applications

For existing applications, you can to execute the following command after cloning your project:

docker-compose up --build

Starting up your Rails applications

After creating or setting up an existing application, in all subsequent run you can do:

docker-compose up

Stoping the application

To stop the application, hit Ctrl+C and wait the application's shutdown.

Executing rails commands

To execute any rails command, you can do:

docker-compose run --rm web bundle exec rails <args>

Where <args> are the arguments for rails. For example, to generate an scaffold you can do:

docker-compose run --rm web bundle exec rails generate scaffold post title content:text

It's a lot of typing, this lead us to the next topic. =)

Speeding up your docker-compose command using aliases

To avoid a lot of typing, I strongly recommend the use of the following aliases in your shell:

alias dc='docker-compose'
alias b='docker-compose run --rm web bundle'
alias be='docker-compose run --rm web bundle exec'
alias bundle='docker-compose run --rm web bundle'
alias rails='docker-compose run --rm web bundle exec rails'
alias webs='docker-compose run --rm web bin/setup' # web Setup
alias webx='docker-compose run --rm web'           # web eXecute

Using the rails alias above, you can generate a scaffold using:

rails generate scaffold post title content:text

Resetting the database

All database's data are stored in a local docker volume that persits across application's restarts. To wipe out all data and reset the database, stop the application and remove the docker volume using the following command:

docker volume rm <volume>

Where <volume> is the database volume's name, which is a concatenation of application's directory name and postgres. For example, if your application is within myapp directory you can remove the volume myapp_postgres.

When you start up the application again, a new volume will be automatically created.

Automatically restoring an database backup in you development environment

You can restore an database dump to use in your local environment, for this follow the steps below:

1. reset the database in your local environment like explained in Resetting the database
2. copy your database dump to docker/postgres/backup.dump
3. start up your application

You need to reset the database because the dump only will be loaded in fresh installations to avoid overwriting of existing data.

Customizing stack

Currently this setup includes ruby 3.1.1, postgres 14 and redis 6. However you can customize the version of any of them.

To customize ruby version, open the file docker-compose.yml, locate the following line and edit the version you would like to use.

RUBY_VERSION: '3.1.1'

To customize postgres and/or redis, open docker-compose.yml file and change image version as you wish.

After editing, execute docker-compose build to rebuild the application's images.

Bugs and Feedback

If you discover any bugs or have some idea, feel free to create an issue on GitHub:

https://github.com/jweslley/docker-rails-bootstrap/issues

License

MIT license. Copyright (c) 2020 Jonhnny Weslley http://jonhnnyweslley.net

See the LICENSE file provided with the source distribution for full details.