How to log in to private warehouse with docker

Docker is an open source application containerization platform that can package applications and related software libraries into a container for deployment and running in different environments. Docker Hub is a public image warehouse officially provided by Docker, where users can publish their own images and download other users' images. However, sometimes we need to store our own images in a private repository to better protect data privacy and security. So, in this article, we will introduce how to log in to a private warehouse in Docker.

Step One: Install Docker

First, we need to install Docker on the local computer or server to be able to run Docker commands on it. You can download the corresponding Docker installation package from the Docker official website for installation.

Step 2: Create a private repository

Create a private image repository on a local or remote server, for example, use tools such as Docker Registry or Nexus Repository Manager to create a private repository.

Step 3: Log in to the private warehouse on the local or remote server

Use the docker login command to log in to the private warehouse so that you can upload and download images. For example, assuming the address of the private warehouse is registry.example.com, you can use the following command to log in:

docker login registry.example.com

After executing this command, Docker will prompt you to enter the user name and password, which corresponds to the private warehouse user name and password.

Step 4: Tag and push the image

Before uploading the local image to the private warehouse, you need to use the docker tag command to add the appropriate tag, for example:

docker tag [镜像名称] registry.example.com/[镜像名称]

where [Image name] is the name of the local image, and registry.example.com/[Image name] is the name of the image created in the private warehouse.

Next, use the docker push command to upload the marked image to the private warehouse:

docker push registry.example.com/[镜像名称]

In this way, the local image is successfully uploaded to the private warehouse.

Step 5: Pull the image from the private warehouse

Use the docker pull command to pull the image from the private warehouse, for example:

docker pull registry.example.com/[镜像名称]

In this way, you can pull the image locally Or use the image in the private warehouse on the remote server.

Summary

Docker can help us deploy containerized applications to different environments, while private warehouses can provide higher privacy and security to prevent data leaks and attacks. Through the above steps, we can easily log in to our own private warehouse, upload and download our own images, conveniently and quickly.

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