# running container in runc
https://povilasv.me/how-to-monitor-containerd/

## create a container
docker run --name cont1 alpine:latest sh

## export it's rootfs to use it as our base
docker export cont1 > rootfs.tar

## extract it to a folder
mkdir -p ./rootfs
tar -xf rootfs.tar -C ./rootfs

## generate runc spec

# this will create config.json
runc spec

# Change the spec args to
# "args": [
#   "sh", "-c", "sleep 10000 && echo \"Hello, World!\""
# ],

## run the container
sudo runc run cont1

## [crun](https://github.com/containers/crun)

hychang@hychang-MS-7A40:~$ podman --runtime /usr/bin/runc run --rm --memory 1M debian:bookworm-slim echo it works
Error: OCI runtime error: runc create failed: unable to start container process: container init was OOM-killed (memory limit too low?)
hychang@hychang-MS-7A40:~$ podman --runtime /usr/bin/crun run --rm --memory 1M debian:bookworm-slim echo it works
it works

## [OCI Runtime Specification](https://github.com/opencontainers/runtime-spec)
https://opencontainers.org/