[docs] Add section 'Dev Container' to the Mojo stdlib docs

stdlib/docs/development.md

@@ -17,6 +17,22 @@ And if you're using VS Code:
 - [Install the nightly VS Code
   extension](https://marketplace.visualstudio.com/items?itemName=modular-mojotools.vscode-mojo-nightly)
 
+### Dev Container
+
+There is an externally maintained
+[Mojo Dev Container](https://github.com/benz0li/mojo-dev-container) with all
+prerequisites installed.
+
+The Dev Container also includes the unit test dependencies `lit` and `FileCheck`
+(from LLVM) and has `pre-commit` already set up.
+
+See [Mojo Dev Container > Usage](https://github.com/benz0li/mojo-dev-container#usage)
+on how to use with [Github Codespaces](https://docs.github.com/en/codespaces/developing-in-codespaces/creating-a-codespace-for-a-repository#creating-a-codespace-for-a-repository)
+or [VS Code](https://code.visualstudio.com/docs/devcontainers/containers).
+
+If there is a problem with the Dev Container, please open an issue at
+<https://github.com/benz0li/mojo-dev-container/issues>.
+
 ## Building the standard library
 
 To build the standard library, you can run the