This repository contains the code used to generate CentOS 7 diskless images, which can be boot using IPXE.
You need to run this script in a host with the docker engine installed in it.
In order to generate the CentOS 7 diskless images, you just need to run the generate.sh script. The resulting files will be located in the output directory. generate.sh can be run using optional parameters:
If --prod is not passed as argument, the image will be built for production environment. Otherwise, it will build for dev environment.
Optional arguments: -h, --help Show this help message and exit --prod Builds image for the production environment -s, --skip-output Only builds the image but don't output products. Nice for testing.
The images are generated using a Docker container based on CentOS 7. The docker image generation files are provided in the docker directory. So, the script first generates the docker images and, then, builds the image inside that container.
The login_docker.sh script can be used to access the container after generate.sh is run. The rootfs of the CentOS 7 Lite image is in /centos7-builder/diskless-root/, inside the container.
So, for example, to check the users and groups inside the image, use:
cat /centos7-builder/diskless-root/etc/passwd
cat /centos7-builder/diskless-root/etc/group
Each directory in this repository has a README.md file that you can check to learn more about its contents.