Question: `docker buildx` not installed by default since Docker CLI v27?

Server: Hetzner AX51 (root serv) Ubuntu 20 base

Noticed builds failing for some reason:

```
root@f1.test ~ # docker buildx
docker: 'buildx' is not a docker command.
See 'docker --help'
```

Fixed by installing manually:

```
apt-get install docker-buildx-plugin
```

---

https://github.com/frappe/press/blob/67c0e70c2e4f42e94bde1c0b6d2a106d38d02632/press/playbooks/roles/docker/tasks/main.yml#L40-L43

re: https://docs.docker.com/engine/deprecated/#legacy-builder-for-linux-images