README.md

docker-systemd

Docker containers for systemd testing on Debian based OS.

Build

❯ docker build . -t systemd-debian-sid  --build-args base_system=debian:sid

Example base_system arguments :

• debian:10
• debian:sid
• ubuntu:18.04
• ubuntu:20.04

The following containers are available from Docker Hub.

❯ docker pull fauust/docker-systemd:debian-10
❯ docker pull fauust/docker-systemd:debian-sid
❯ docker pull fauust/docker-systemd:ubuntu-18.04
❯ docker pull fauust/docker-systemd:ubuntu-20.04

Usage

For systemd to start, it is necessary to:

• share the volume /sys/fs/cgroup with container (use read-only mode);
• run the container in privileged mode.

❯ docker run --name sys-test --privileged -d -v /sys/fs/cgroup:/sys/fs/cgroup:ro fauust/docker-systemd:debian-10
❯ docker exec -it sys-test bash
root@59c9e3e924e7:/# apt update && apt install procps
...
root@59c9e3e924e7:/# ps fax
    PID TTY      STAT   TIME COMMAND
     34 pts/0    Ss     0:00 bash
    420 pts/0    R+     0:00  \_ ps fax
      1 ?        Ss     0:00 /lib/systemd/systemd
     24 ?        Ss     0:00 /lib/systemd/systemd-journald

Notes

For testing purposes only, do not use in production!