Create a base image using docker

With a learning attitude, I want to know how to create a basic docker image. So I found a description on the official docker website:

First, the creation of base image is related to the Linux release version to be created. Different releases are different.

The following are examples:

1. Use the tar command to create a complete image

   Use debootstrap to create Ubuntu base image

$ sudo debootstrap raring raring > /dev/null$ sudo tar -C raring -c . | sudo docker import - raringa29c15f1bf7a$ sudo docker run raring cat /etc/lsb-releaseDISTRIB_ID=UbuntuDISTRIB_RELEASE=13.04DISTRIB_CODENAME=raringDISTRIB_DESCRIPTION="Ubuntu 13.04"

2. Use scratch to create a base image

There is a scratch in docker registry, and an empty tar file is used to create an image.

$ tar cv --files-from /dev/null | docker import - scratch

Now you can use docker pull to create an image from the smallest container:

FROM scratchCOPY true-asm /trueCMD ["/true"]

The above is dockerfile.

Create a base image using docker