# Installing Docker

Follow the [Official Guide](https://docs.docker.com/engine/installation).

Googlers: [go/installdocker](https://goto.google.com/installdocker).

[Why Docker?](faq.md#why-do-you-use-docker)

*NOTE: (Optional) If you want to run `docker` without `sudo`, follow the [Create a docker group](https://docs.docker.com/engine/installation/linux/ubuntulinux/#/create-a-docker-group) section.*

*NOTE: Docker images can consume significant disk space. Run*
*[docker-cleanup](https://gist.github.com/mikea/d23a839cba68778d94e0302e8a2c200f)*
*periodically to garbage collect unused images.*