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remote_pry_docker_debug

🌐 Remote Pry Debugging in Docker​

When your Rails app runs in Docker or Kubernetes, local binding.pry won't attach. pry-remote opens a TCP server inside the container—just forward the port to your host and connect remotely.

# Gemfile (development group)
gem 'pry-remote'

# In your code
def risky_method
  require 'pry-remote'; binding.remote_pry
  # execution pauses until you connect
  do_critical_work
end

Start your container with port 9876 exposed:

docker run -p 9876:9876 my-app:dev

Then from your host shell:

pry-remote --host 127.0.0.1 --port 9876

You’ll get a pry session in the exact context of your running container. No more guessing with logs across environments!