Docker Engine Docker: Error response from daemon: manifest for <image>:<tag> not found

What is Docker Engine Docker: Error response from daemon: manifest for <image>:<tag> not found

Understanding Docker Engine

Docker Engine is a containerization technology that allows developers to automate the deployment of applications inside lightweight, portable containers. It provides a consistent environment for application execution, making it easier to manage dependencies and configurations across different environments. Docker Engine is widely used for its efficiency and scalability in deploying applications.

Identifying the Symptom

When using Docker, you might encounter an error message that reads: Docker: Error response from daemon: manifest for <image>:<tag> not found. This error typically occurs when attempting to pull an image from a Docker registry, such as Docker Hub, and the specified image tag does not exist.

What You See

The error message is displayed in the terminal or command line interface when you run a command like docker pull <image>:<tag>. The operation fails, and the image is not downloaded to your local machine.

Explaining the Issue

The error message indicates that the Docker daemon could not find the specified image tag in the registry. This can happen for several reasons:

The image tag is misspelled or incorrect. The image tag does not exist in the registry. The image has been removed or is private, and you do not have access.

Understanding Docker Tags

Docker tags are used to identify different versions of an image. If you do not specify a tag, Docker defaults to the latest tag. It is crucial to ensure that the tag you are trying to pull exists in the registry.

Steps to Resolve the Issue

To fix the manifest not found error, follow these steps:

Step 1: Verify the Image and Tag

First, ensure that the image name and tag are correct. You can check the available tags for an image on Docker Hub or your private registry. Visit the Docker Hub and search for the image to see all available tags.

Step 2: Use a Valid Tag

Once you have verified the available tags, use a valid tag in your docker pull command. For example:

docker pull nginx:1.21.0

This command pulls the nginx image with the 1.21.0 tag.

Step 3: Check for Private Images

If the image is private, ensure you have the necessary permissions and are logged in to the registry. Use the docker login command to authenticate:

docker login

Enter your credentials when prompted.

Additional Resources

For more information on Docker images and tags, visit the official Docker documentation. If you continue to experience issues, consider reaching out to the Docker community on Docker Forums for further assistance.