How to configure the mirror repository of docker

Six key steps to configure Docker mirror warehouse: Select the mirror warehouse to create the warehouse authentication to the mirror warehouse push the mirror to the warehouse pull the mirror from the warehouse Configure the mirror warehouse credentials (optional)

How to configure Docker image repository

The Docker image repository is the central location for storing and managing Docker images. To configure a Docker image repository, follow these steps:

1. Select the mirror warehouse

• Docker Hub: Public image repository, stored by default on docker.io.
• Private mirror warehouse: Hosted at your own infrastructure or third-party service provider.

2. Create a repository

• Docker Hub: Create an account and create a repository directly on the Docker Hub website.
• Private image repository: Create a repository using the Docker Registry API or third-party tools such as Portainer or Harbor.

3. Authenticate to the mirror warehouse

• Docker Hub: Use the docker login command to log in to Docker Hub.
• Private mirror repository: Use appropriate authentication methods (such as OAuth2, username/password or certificate) depending on the mirror repository used.

4. Push the mirror to the repository

• Use the docker push command to push the local image to the repository. The syntax is:

   <code>docker push <registry>/<repo>/<image>[:<tag>]</tag></image></repo></registry></code>

  For example:

   <code>docker push docker.io/my-repo/my-image:latest</code>

5. Pull the mirror from the warehouse

• Use the docker pull command to pull the image from the repository. The syntax is:

   <code>docker pull <registry>/<repo>/<image>[:<tag>]</tag></image></repo></registry></code>

  For example:

   <code>docker pull docker.io/library/nginx:latest</code>

6. Configure mirror repository credentials (optional)

• To avoid the need for authentication every time a mirror is pushed or pulled, you can configure the mirror repository credentials.

• Add credentials in Docker client configuration ( ~/.docker/config.json ):

   <code class="json">{ "auths": { "<registry>": { "auth": "<base64 encoded username:password>" } } }</base64></registry></code>

By completing these steps, the Docker image repository is successfully configured. This will allow you to store, manage, and share Docker images, simplifying deployment of containerized applications.

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