# What is Docker? ## What is Docker? [Docker](https://www.docker.com/) is a popular containerization platform used to package and deploy software applications. It allows developers to create self-contained, portable environments that can be easily shared and run on any machine, regardless of its underlying operating system or infrastructure. Docker uses a layered file system and minimal resource overhead, making it fast and efficient for creating, deploying and managing applications. For more details about Docker, please check out their [documentation](https://docs.docker.com/get-started/overview/). ## What is Docker Compose? [Docker Compose](https://docs.docker.com/compose/) is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services. Then, with a single command, you create, start, stop, update, etc all the services defined for your application. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://sdr-enthusiasts.gitbook.io/ads-b/intro/what-is-docker.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.