Custom disk images

How to create custom ext2 images to use as a filesystem for CheerpX

This guide will show you how to configure a Docker container and build it into an ext2 image for use with CheerpX.

1. Create a Dockerfile

For example, the following Dockerfile installs the curl command-line tool:

FROM --platform=i386 i386/debian:buster
ARG DEBIAN_FRONTEND=noninteractive

RUN apt-get update && apt-get -y upgrade && apt-get -y install curl

Note that the base image’s architecture must be 32-bit x86 (for example, i386 or i686).

2. Create a container out of your Dockerfile

buildah build -f Dockerfile --platform linux/i386 -t cheerpximage
podman create --name cheerpxcontainer cheerpximage

3. Copy the filesystem from the container into a local directory

mkdir cheerpXFS
podman cp cheerpxcontainer:/ cheerpXFS/

4. Create an ext2 image from the specified directory

mkfs.ext2 -b 4096 -d cheerpXFS/ cheerpXImage.ext2 600M