Connect local Rails to a Postgres in Docker

README.md

Connect local Rails to a Postgres in Docker

(reference)

1. Install Docker:

brew install docker # or brew install homebrew/cask/docker

2. Start PG in a container:

docker run --name some-postgres -e POSTGRES_PASSWORD=<mysecretpassword> -e POSTGRES_USER=<username> -p <host_port>:5432 -d postgres[:TAG]

Once created, next time you can you docker start some-postgres

3. Update config/database.yml:

development:
  adapter: postgresql
  encoding: unicode
  pool: 5
  host: localhost
  port: <host_port>
  password: <mysecretpassword>
  database: my_db_development

4. Create db:

bin/rails db:create