How do i choose a smaller docker image for my container?

petulia3478

Note: It is best practice to use smaller images if possible. If a smaller image will do the same job as a bigger image, using a smaller image is better.

Pull the images first.

$ docker pull alpine
$ docker pull fedora

Check the image sizes.

docker images
REPOSITORY                 TAG                 IMAGE ID            CREATED             SIZE
alpine                     latest              3f53bb00af94        2 weeks ago         4.41MB
fedora                     latest              25e6809f6fab        2 weeks ago         274MB

The image size difference is quite big. Using a smaller image is just for streamlining your applications. There are cases where you have a specific requirement to use a certain image even if it is bigger.

Delete the image you do not need.

$ docker rmi fedora