Docker Tutorial

Docker Installation

How to use Docker

Docker Instance

Docker Container Lifecycle Command

Docker Container Operation Command

Docker Container rootfs Command

Docker Mirror Repository Command

Docker Local Image Management Command

Docker info|version Command

Docker repository management

Docker repositories are used to store and distribute Docker images. They can be hosted on registries like Docker Hub, which is the default public registry, or on private registries such as those hosted by cloud providers or on-premises servers. In this tutorial, we'll cover the basics of Docker repository management, including creating, modifying, and deleting repositories.

Creating a repository:

To create a repository, you'll first need to create and tag a Docker image. Then, push the image to the desired registry. The registry will automatically create a repository if it does not already exist.

Example:

Build a Docker image:
```
docker build -t myusername/myrepository:mytag .
```
Replace myusername with your Docker Hub username (or registry namespace), myrepository with the desired repository name, and mytag with the desired image tag.
Push the image to Docker Hub (or another registry):
```
docker push myusername/myrepository:mytag
```
The docker push command will automatically create the myusername/myrepository repository if it does not already exist.

Modifying a repository:

To modify a repository, you'll need to update the images and tags within the repository.

Add a new image or tag:
Build a new Docker image or add a new tag to an existing image, then push the image to the repository using the docker push command as explained in the previous step.
Remove an image or tag:
To remove an image or tag from a repository, you can use the registry's web interface or API. For Docker Hub, follow these steps:
- Log in to Docker Hub (https://hub.docker.com/) and navigate to the desired repository.
- Click on the "Tags" tab.
- Locate the tag you want to delete and click on the trash can icon next to it.

Deleting a repository:

To delete a repository, you'll need to use the registry's web interface or API.

For Docker Hub, follow these steps:
- Log in to Docker Hub (https://hub.docker.com/) and navigate to the desired repository.
- Click on the "Settings" tab.
- Scroll down to the "Danger Zone" section and click on "Delete Repository."
- Confirm the deletion by typing the repository name and clicking "Delete."
For other registries, refer to their documentation for instructions on deleting repositories.

This tutorial should give you a basic understanding of Docker repository management, including creating, modifying, and deleting repositories. Remember that each registry may have its own specific tools, APIs, and interfaces for managing repositories. Consult the documentation for the specific registry you are using for more detailed information.

Tagging and Versioning in Docker Repositories:
- Description: Tag Docker images to signify different versions or configurations within a repository.
- Code Example:
```
docker tag my_image:latest my_repository/my_image:1.0
```