GeolocationApi

• Api responsible for exposing geolocation data through a RESTful endpoint, based on the ip address of the geolocation, passed as argument in the request, only endpoint available: /api/geolocation/:ip_address

Setup for development

• All you need to get it up and running in development environment is the command docker-compose up and also run the migration contained in the project with mix ecto.migrate, of course if you want to see data you will need to populate the table, which can be done through the Geolocation_handler library.
• It was chosen not to include the command to run the migration in the build setup to give more flexibility in case you are using an already migrated or even corrupted/snapshot database (which I think is a good idea specially for production environments because migrations are risky stuff and should be used explicitly when needed).
• Easiest way to run unit tests is enter the container after it's up and run mix test from within.

Additional Steps to become production ready:

• Configure CI/CD
• Better environment separation and configuration for prod/dev differences.
• Process to run migrations in production environment (can be through remote-console or release tasks)
• Terraform to provision infrastrucure automatically always in the same way with dynamic configuration
• Other network configuration such as DNS, possibly load balance, blue/green deploys, docker image tagging and versioning, git releases, etc...