Default db config

.env.example

@@ -0,0 +1,3 @@
+PGHOST=db
+PGUSER=postgres
+PGPASSWORD=changeme

README.md

@@ -20,6 +20,7 @@ This app demonstrates Rails 7 with PostgreSQL, import maps, turbo, stimulus and
 
 ## Initial setup
 ```
+cp .env.example .env
 docker compose build
 docker compose run --rm web bin/rails db:setup
 ```