98 lines
4.0 KiB
Markdown
98 lines
4.0 KiB
Markdown
# Kickstart to RootFS Builder
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This project provides the ability build `rootfs` file from `kickstart` input file in a docker/podman container environment. Output rootfs files can be used create base images for different OSs (AlmaLinux, Cent OS, Rocky Linux) etc.
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## Building local
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Two different variants of the image `almalinux/ks2rootfs` are avilable.
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* [**`latest`**](https://hub.docker.com/r/almalinux/ks2rootfs/tags?page=1&ordering=last_updated&name=latest)
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* [**`livecd-tools`**](https://hub.docker.com/r/almalinux/ks2rootfs/tags?page=1&ordering=last_updated&name=livecd-tools)
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### Building `almalinux/ks2rootfs:latest` image tag
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Use follwing command `latest` tag image to create `rootfs` files for `docker` and `WSL` images.
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```sh
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docker build -t almalinux/ks2rootfs -f Dockerfile .
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```
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### Building `almalinux/ks2rootfs:livecd-tools` image tag
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Use follwing command `livecd-tools` tag image to create [`SIG/LiveMedia ISO`](https://github.com/AlmaLinux/sig-livemedia) images, check GitHub [repo](https://github.com/AlmaLinux/sig-livemedia).
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```sh
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docker build -t almalinux/ks2rootfs:livecd-tools -f Dockerfile.livecd .
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```
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## Using `almalinux/ks2rootfs:latest` image tag
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Use `latest` tag image to create `rootfs` files for `docker` and `WSL` images.
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### Using `lastet` Image tag
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Run following command under `tests` folder. Test script kickstart files are available at `kickstarts`. **NOTE**: These scripts test use only. Official docker image kickstart files are avaialble in GitHub [docker-images](https://github.com/AlmaLinux/docker-images) repository.
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Use command below to create `default` docker files
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```sh
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docker run --rm --privileged -v "$PWD:/build:z" \
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-e KICKSTART_FILE=kickstarts/almalinux-8-default.x86_64.ks \
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-e IMAGE_NAME=almalinux-8-docker-default.x86_64.tar.gz \
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-e OUTPUT_DIR=default \
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-e BUILD_TYPE=default \
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almalinux/ks2rootfs
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```
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Use command below to create `base` docker files
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```sh
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docker run --rm --privileged -v "$PWD:/build:z" \
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-e KICKSTART_FILE=kickstarts/almalinux-8-base.x86_64.ks \
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-e IMAGE_NAME=almalinux-8-docker-base.x86_64.tar.gz \
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-e OUTPUT_DIR=base \
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-e BUILD_TYPE=base \
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almalinux/ks2rootfs
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```
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Use command below to create `init` docker files
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```sh
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docker run --rm --privileged -v "$PWD:/build:z" \
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-e KICKSTART_FILE=kickstarts/almalinux-8-init.x86_64.ks \
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-e IMAGE_NAME=almalinux-8-docker-init.x86_64.tar.gz \
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-e OUTPUT_DIR=init \
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-e BUILD_TYPE=init \
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almalinux/ks2rootfs
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```
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### Environment variables
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Container startup script `ks2rootfs` supports multiple environment varible to customize the output. The environment variables and their use as follows
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```sh
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ENVIRONMENT VARIABLES:
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======================
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KICKSTART_FILE : Reuired - Input kickstart source file (.ks)
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IMAGE_NAME : Required - Rootfs output file name
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BUILD_WORK_DIR : Optional - Working dir for kickstart source and image destination. Defaults to current directory.
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OUTPUT_DIR : Optional - Output directory name in working directory. Ddefault value is 'result'.
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FLAG_OUTOUT_IN_PWD : Optional - Set this flag to true to write output files in current working directory. Default value is 'false'. When value is set to 'true', any value passed to 'OUTPUT_DIR' will be ignored.
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FLAG_WRITE_META : Optional - Generate meta data about the kickstart build system. Default value is 'true'.
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FLAG_RETAIN_LOG : Optional - When enabled, generated logs files retained under 'logs' output directory. Default value is 'false'.
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BUILD_COMPTYPE : Optional - Build compression type default 'xz', 'gzip' and 'lzma'.
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BUILD_TYPE : Optional - Build type 'base', 'default', 'init', 'micro', 'minimal' and 'wsl', Default value is 'default'.
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USAGE:
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ks2rootfs KICKSTART_FILE_NAME ROOTFS_FILE_NAME
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EXAMPLES:
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ks2rootfs os-minimal.ks os-minimal.tar.gz
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```
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## Using `almalinux/ks2rootfs:livecd-tools` Image
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`livecd-tools` tag image to create [`SIG/LiveMedia ISO`](https://github.com/AlmaLinux/sig-livemedia) images, check GitHub [repo](https://github.com/AlmaLinux/sig-livemedia) for more detailed use.
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