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Run systemd inside a Podman Container

Podman supports systemd support out of the box. Here are 4 examples using Fedora, RedHat, Oracle and OpenSUSE based images.

Host configuration

The container_manage_cgroup boolean must be enabled for this to be allowed on an SELinux separated system.

sudo setsebool -P container_manage_cgroup true

Build container

RUN curl -fsSL https://api.github.com/users/${USERNAME}/keys | jq --raw-output '.[] | .key' > /tmp/authorized_keys &&\
    chmod 600 /tmp/authorized_keys

Fedora

podman build --tag systemd \
             --build-arg BASEIMAGE=docker.io/fedora:35 \
             --build-arg USERNAME=$USERNAME redhat

ORACLE Linux

podman build --tag systemd \
             --build-arg BASEIMAGE=docker.io/oraclelinux:8.5 \
             --build-arg USERNAME=$USERNAME redhat

RHEL ubi

podman build --tag systemd \
             --build-arg BASEIMAGE=registry.access.redhat.com/ubi8/ubi:8.5 \
             --build-arg USERNAME=$USERNAME redhat

OpenSUSE

podman build --tag systemd \
             --build-arg BASEIMAGE=docker.io/opensuse/leap:15.3 \
             --build-arg USERNAME=$USERNAME opensuse

Run container

podman run -d --rm -p 2022:22 --systemd=true --name systemd systemd

Connect container via ssh

 ssh -p 2022 localhost

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