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Claude Code can do more than suggest a fix. It can edit files, install dependencies, run tests, and start your application.
But letting it finish a task on its own raises a practical question: how much of your computer should those commands be allowed to affect?
Approving commands one at a time keeps you involved in every step. Removing those prompts lets Claude keep working, but you still need a way to limit its access.
Docker Sandboxes provides that boundary by running Claude inside a lightweight Linux virtual machine, called a microVM, with controlled access to your project and the network.
I wanted to see how useful that freedom would be, and where its limits were. Inside a Docker sandbox, Claude added a health endpoint to my Flask app, wrote a test, built a Docker image, passed all three tests in a container, and checked that the application responded. It finished without asking me to approve a command.
I also tested Docker's two project modes. In direct mode, the sandboxed Claude could change a project folder on my Mac immediately. In clone mode, it worked on a separate copy inside the sandbox, so I could review its changes before applying them to the original project. I then tested which files Claude could read, change, and send over the network.
In this article, you'll learn what Docker Sandboxes isolates, what those tests revealed, and how to run Claude in a sandbox with your own project. You'll choose between direct and clone mode, configure network access, and review Claude's work before using it.
Table of Contents
Install Docker Sandboxes and Sign in
Choose the Network Access Claude Needs
Start Claude in Your Own Project
Review the Work Before Using it
Keep Unrelated Secrets Out of Claude's Reach
Run the Application and Open it in Your Browser
Stop the Sandbox Without Losing Your Work
Prerequisites
To follow the commands in this article, you'll need:
Basic terminal skills and familiarity with Git commits, branches, and diffs. Knowing what Docker images and containers are will help with the application example.
An Apple-silicon Mac running macOS Sonoma 14 or later, with Homebrew and Git installed. These instructions use macOS. Docker documents installation on other supported platforms.
A Docker account, plus a Claude subscription that includes Claude Code or an Anthropic API key. We'll walk through signing in below.
But letting it finish a task on its own raises a practical question: how much of your computer should those commands be allowed to affect?
Approving commands one at a time keeps you involved in every step. Removing those prompts lets Claude keep working, but you still need a way to limit its access.
Docker Sandboxes provides that boundary by running Claude inside a lightweight Linux virtual machine, called a microVM, with controlled access to your project and the network.
I wanted to see how useful that freedom would be, and where its limits were. Inside a Docker sandbox, Claude added a health endpoint to my Flask app, wrote a test, built a Docker image, passed all three tests in a container, and checked that the application responded. It finished without asking me to approve a command.
I also tested Docker's two project modes. In direct mode, the sandboxed Claude could change a project folder on my Mac immediately. In clone mode, it worked on a separate copy inside the sandbox, so I could review its changes before applying them to the original project. I then tested which files Claude could read, change, and send over the network.
In this article, you'll learn what Docker Sandboxes isolates, what those tests revealed, and how to run Claude in a sandbox with your own project. You'll choose between direct and clone mode, configure network access, and review Claude's work before using it.
Table of Contents
Install Docker Sandboxes and Sign in
Choose the Network Access Claude Needs
Start Claude in Your Own Project
Review the Work Before Using it
Keep Unrelated Secrets Out of Claude's Reach
Run the Application and Open it in Your Browser
Stop the Sandbox Without Losing Your Work
Prerequisites
To follow the commands in this article, you'll need:
Basic terminal skills and familiarity with Git commits, branches, and diffs. Knowing what Docker images and containers are will help with the application example.
An Apple-silicon Mac running macOS Sonoma 14 or later, with Homebrew and Git installed. These instructions use macOS. Docker documents installation on other supported platforms.
A Docker account, plus a Claude subscription that includes Claude Code or an Anthropic API key. We'll walk through signing in below.