Create a Quadlet-based systemd container unit so a UBI 10 container named sleepy starts automatically...

Solution:

Create the Quadlet file:

mkdir -p /etc/containers/systemd

cat > /etc/containers/systemd/sleepy.container < < 'EOF'

[Container]

Image=registry.access.redhat.com/ubi10/ubi

ContainerName=sleepy

Exec=sleep 3600

[Install]

WantedBy=multi-user.target

EOF

Reload and enable:

systemctl daemon-reload

systemctl enable --now sleepy.service

systemctl status sleepy.service

Detailed Explanation:

Quadlet is the preferred modern way to manage Podman containers with systemd for new configurations.

The .container file is translated into a systemd-managed service.

RHEL 10 documentation notes that podman generate systemd still exists, but Quadlets are preferred for new setups. ( Red Hat Documentation )