Fork of the progrium's busybox project.
Build a Busybox with opkg, for armhf targets from a x86_64 build machine.
This image is meant to be used as the base image for Busybox-based containers. It includes glibc, uclibc, and opkg with an easy-to-use wrapper for installing packages from your Dockerfiles:
FROM moul/armhf-busybox
RUN opkg-install curl bash git
CMD ["/bin/bash"]
The above Dockerfile grabs the latest package index during build, installs curl, bash, git, all their dependencies, and then deletes the local package index. The result is a Docker image that's only 10MB. Not too shabby.
Compare that to a minimal Ubuntu 12.04 (which comes with curl, bash) after installing git: 300MB.
If you want more control over how the rootfs is produced by customizing the buildroot config, there is some great tooling and an easy workflow. Delete the rootfs.tar file, then:
$ cd rootfs
$ make config
This will run an interactive menu inside a Docker container to configure buildroot. The resulting config will be placed at rootfs/config. Now go back up and rebuild:
$ cd ..
$ make build
This will cause buildroot to run again using rootbuilder and your config. Building will likely take a while. The result will not only be a new rootfs.tar, but a new local Docker image tagged busybox.
Original project by @progrium: BSD This fork: BSD too