Update README.md

README.md

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 A **development container** is a running [Docker](https://www.docker.com) container with a well-defined tool/runtime stack and its prerequisites. The Remote - Containers extension in the [Remote Development](https://aka.ms/vscode-remote/download/extension) extension pack allows you to open any folder mounted into or inside a dev container and take advantage of VS Code's full development feature set.
 
-This repository contains a set of **dev container definitions** to help get you up and running with a containerized environment. The definitions describe the appropriate container image, runtime arguments for starting the container, and VS Code extensions that should be installed. They provide files beyond the `devcontainer.json` container configuration file like Dockerfiles or Docker Compose files that they can be dropped into an existing project and used. They can also be used as  configuration samples for setting up your own containers. (However, see the [vscode-remote-try-*](https://github.com/search?q=org%3Amicrosoft+vscode-remote-try-&type=Repositories) repositories if you are looking for complete sample projects.)
+This repository contains a set of **dev container definitions** to help get you up and running with a containerized environment. The definitions describe the appropriate container image, runtime arguments for starting the container, and VS Code extensions that should be installed. They provide a container configuration file (`devcontainer.json`) along with an image, Dockerfile, or Docker Compose file you can drop them into any existing folder as a starting point. If you have an existing Docker setup, you can use them as examples to help you adapt your own configuration. (However, the [vscode-remote-try-*](https://github.com/search?q=org%3Amicrosoft+vscode-remote-try-&type=Repositories) repositories are a better starting point if you are looking for complete sample projects.)
 
 ## Using a definition