curiOS, pronounced curious, is a project by the same team of developers that created and maintain the Infix operating system. If you like the idea of modeling an entire OS with YANG, have a look at Infix.
This project provides a set of defconfigs for 64-bit ARM and x86 systems that can be used with Infix or any other OCI compatible runtime.
Note
The system container is very useful for staging/development before deploying any of the slim application containers, because they can be very difficult to debug (none or little tooling in image).
The KernelKit AppStore on GHCR provides the following pre-built images.
An example system container, shows how to run multiple services. Comes with the following services and tools:
- BusyBox (full configuration)
- Dropbear SSH daemon
- mini-snmpd
- netopeer-cli
- nftables
- ntpd
See this blog post on how to use this container with Infix:
This container is only ntpd, started by tini with -n -g flags. The
default configuration file is /etc/ntp.conf, see doc/ for a sample. To
override use a mount or volume, and remember to also set up a volume for the
/var or /var/lib directory to let the daemon save drift data.
ISC ntpd supports multicasting NTP to a subnet. For more information see the official ntpd site.
Useful for advanced netfilter setups when the container runs in host network
mode. At startup it loads /etc/nftables.conf and then waits for a signal.
At shutdown nft flush ruleset is called.
This container comes with a minimal set of BusyBox tools, including a shell,
so the nftables.conf file can be modified from inside the container (vi).
Although the most common use-case is to mount a file from the host system.
See doc/ for two samples: end-device and home router.
See this blog post on how to use this container with Infix:
Tiny web server container based on BusyBox httpd, suitable for embedding in a firmware image as an example container.
The server looks for /var/www/index.html, so use a volume on /var/www to
change the default web page.
With a custom command you can also change the default command line, e.g, to run in foreground, with verbose mode, on port 8080:
/usr/sbin/httpd -f -v -p 8080
For more help, see the BusyBox docs
curiOS is a wrapper around Buildroot for creating container images for uploading to Docker Hub or similar. Buildroot is an SDK for building embedded Linux distributions. It handles the removal of man pages, shared files, and many pieces not germane to running on an embedded platform, and, as it turns out, containers.
curiOS is a fork of https://github.com/brianredbeard/coreos_buildroot