Restarting Our Rails Server with Database
Explore how to integrate a Postgres database into your Rails app using Docker Compose. Learn to organize environment configurations, create development and test databases with Rails commands, and restart the Rails server to apply changes. This lesson helps you verify the database connection and practice running migrations and scaffolds in a Dockerized Rails environment.
Separating our environment-specific configurations
First, we will need some directories to store our environment-specific config:
$ mkdir -p .env/development
Configurations of web
Then we require a file, .env/development/web (without a file extension), which contains our web-service-specific environment variables:
DATABASE_HOST=database
Configurations of database
And another file, .env/development/database, containing variables for our database service:
POSTGRES_USER=postgres
POSTGRES_PASSWORD=some-long-s