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A Docker Extension to interactively debug distroless or slim containers.

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felipecruz91/debug-ctr-extension

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debug-ctr-extension

⚠️ WIP (It only works for MacOS at the moment)

A Docker Extension to interactively debug distroless or slim containers that lack common utility tools.

Screen.Recording.2022-10-25.at.15.04.58.mov

How does it work?

This Docker Extensions deploys the debug-ctr binary in your host and provides a UI in Docker Desktop that allows you to click on a running container to inspect it by opening a terminal into it. See debug-ctr for more information.

Installation

Download the latest version of Docker Desktop and use the following command to install it:

  docker extension install felipecruz/debug-ctr-extension:latest

Run Locally

Clone the project

  git clone https://github.com/felipecruz91/debug-ctr-extension.git

Go to the project directory

  cd debug-ctr-extension

Build the extension

  docker build -t felipecruz/debug-ctr-extension:latest .

Install the extension

  docker extension install felipecruz/debug-ctr-extension:latest

Developing the frontend

  cd ui
  npm install
  npm start

This starts a development server that listens on port 3000.

You can now tell Docker Desktop to use this as the frontend source. In another terminal run:

  docker extension dev ui-source felipecruz/debug-ctr-extension:latest http://localhost:3000

In order to open the Chrome Dev Tools for your extension when you click on the extension tab, run:

  docker extension dev debug felipecruz/debug-ctr-extension:latest

Each subsequent click on the extension tab will also open Chrome Dev Tools. To stop this behaviour, run:

  docker extension dev reset felipecruz/debug-ctr-extension:latest

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A Docker Extension to interactively debug distroless or slim containers.

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