Make sure you have Tor installed in your host environment (`apt install tor`), then navigate to the `docker` folder and from there build the Docker image:
[TorControlParser] INFO o.b.n.tor.Tor: Hidden Service 3jrnfkgkoh463zic54csvntz5w62dm2zno54c3c6jgvusafosqrgmnqd.onion has been announced to the Tor network.