In Docker, you can manage image by creating, pulling, and deleting them. Here is a detailed guide on managing
image in Docker:
To create an
image, you need to use a Dockerfile or create an
image from an existing container. Use the
docker build command along with the path to the Dockerfile and the name of the
docker build -t myimage . will create a new
image from the Dockerfile in the current directory and name it "myimage".
To pull an
image from a Docker Registry (such as Docker Hub), use the
docker pull command followed by the name of the
docker pull nginx will pull the "nginx"
image from Docker Hub.
To delete an unnecessary image, use the
docker rmi command followed by the name or ID of the image.
docker rmi myimage will delete the
image named "myimage".
Note that to delete an image, no
containers should be created from it and it should not be used by any running containers.
To list all existing
image on your computer, use the
docker image command. This command will display a list of
image, including their names, versions, and sizes.
Please note that during the
image creation or pulling process, Docker will download layers and related dependencies. Downloading image may take some time depending on the size of the
image and your internet speed.
Refer to the Docker documentation for more detailed information on
image management and other available options in Docker.