YouTip

# Docker Repository Management A repository is a centralized place for storing images. The following introduces (https://hub.docker.com/). Of course, it's not just Docker Hub; the remote service provider is different, but the operations are the same. ## Docker Hub Currently, Docker officially maintains a public repository (https://hub.docker.com/). Most needs can be met by directly downloading images from Docker Hub. ### Registration Register a free Docker account at [https://hub.docker.com](https://hub.docker.com/). ### Login and Logout Login requires entering a username and password. After a successful login, you can pull all images under your account from Docker Hub. $ docker login[!(#)](#) **Logout** To logout from Docker Hub, you can use the following command: $ docker logout Pulling Images You can search for images in the official repository using the `docker search` command and download them locally using the `docker pull` command. Search using "ubuntu" as the keyword: $ docker search ubuntu[!(#)](#) Use `docker pull` to download the official ubuntu image locally: $ docker pull ubuntu [!(#)](#) ### Pushing Images After a user logs in, they can push their own images to Docker Hub using the `docker push` command. In the following commands, please replace `username` with your Docker account username. $ docker tag ubuntu:18.04 username/ubuntu:18.04 $ docker image ls REPOSITORY TAG IMAGE ID CREATED ... ubuntu 18.04 275d79972a86 6 days ago ... username/ubuntu 18.04 275d79972a86 6 days ago ... $ docker push username/ubuntu:18.04 $ docker search username/ubuntu NAME DESCRIPTION STARS OFFICIAL AUTOMATED username/ubuntu