Docker
Create container from rootfs
tar --verbose --create --file <file name>.tar --directory <path to rootfs> .
cat <file name>.tar | sudo docker import - <image name>
tar -C <path to rootfs> -c . | docker import - <image name>
FROM scratch
ADD <path to rootfs> /
Systemd in container
docker <> --volume /sys/fs/cgroup:/sys/fs/cgroup:rw --cgroupns=host --priveleged --command (/usr)/sbin/init
Remove all images
docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)
docker rmi $(docker images -q -f dangling=true)
docker build --tag <image name> <path to rootfs>
docker run --rm --name container_name -p 80:80 -v path_in_host:path_in_container tag/name:tag
docker build -t tag/name:tag -f DockerFile .
docker exec -it container_name bash
--security-opt=no-new-privileges
--read-only