“postgrex”: {:hex, :postgrex, “0.13.5”
config :my_app, MyApp.Repo,
adapter: Ecto.Adapters.Postgres,
username: System.get_env(“POSTGRES_USER”),
password: System.get_env(“POSTGRES_PASSWORD”),
database: “my_postgres_dev”,
hostname: “db”,
port: 5432,
pool_size: 10
maybe docker postgresql:latest doesn’t match postgrex?
