[RUBY] Show Better Errors in Rails + Docker environment

$ docker-compose up

Even if I type the command, the normal error screen is displayed.

Solution

config/enviroments/development.rb


if Rails.env.development?
  BetterErrors::Middleware.allow_ip! "0.0.0.0/0"
end

Add this code. BetterErrors seems to be used only in development! So set the condition with env!

that's all. .. ..

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