wiki-grav/pages/02.linux/09.podman/default.en.md
2022-05-27 13:27:42 +02:00

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---
title: Podman
---
## Generate systemd service
Create a container the normal way
Using this container as a reference, you can generate a systemd service file
`# podman generate systemd --new --name --files (container)`
Remove your old container
`# podman container rm (container)`
`# cp container-(container).service /etc/systemd/system/`
`# systemctl daemon-reload`
`# systemctl enable --now container-(container)`
The container should now be running just as before
## Auto-Update container
The command to update containers configured for auto-update is `# podman auto-update`
Add `--label "io.containers.autoupdate=image"` to the `ExecStart=/usr/bin/podman ...` line in the service file you generated
Make sure to use, for example, `docker.io/` instead of `docker://` as the source of the image
Reload and restart
`# systemctl daemon-reload`
`# systemctl enable --now container-(container)`
If you want to manually run updates for the configured containers, use this command:
`# podman auto-update`
### Auto-Update timer
To truly automate your updates, enable the included timer
`# systemctl enable --now podman-auto-update.timer`
### Check update log
The update logs are kept in the `podman-auto-update` service
`$ journalctl -eu podman-auto-update`
## Prune images service and timer
`/etc/systemd/system/podman-image-prune.service`
```
[Unit]
Description=Podman image-prune service
[Service]
Type=oneshot
ExecStart=/usr/bin/podman image prune -f
[Install]
WantedBy=multi-user.target
```
`/etc/systemd/system/podman-image-prune.timer`
```
[Unit]
Description=Podman image-prune timer
[Timer]
OnCalendar=weekly
Persistent=true
[Install]
WantedBy=timers.target
```
`# systemctl daemon-reload`
`# systemctl enable --now podman-image-prune.timer`
> [Documentation](https://docs.podman.io/en/latest/markdown/podman-image-prune.1.html)
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