[How to do instruction] pydPiper for Audiophonics I-Sabre ES9023 V3 [Winstar 80x16 OLED]

[Jempie]

Hi

i have try this script with moode 7.30
but Failed to start pydpiper.service

pi@moode:~/pydPiper $ sudo nano pages_raspdac_16x2.py
pi@moode:~/pydPiper $ sudo cp pydpiper.service /etc/systemd/system
pi@moode:~/pydPiper $ sudo systemctl enable pydpiper
Created symlink /etc/systemd/system/multi-user.target.wants/pydpiper.service → /etc/systemd/system/pydpiper.service.
pi@moode:~/pydPiper $ sudo systemctl start pydpiper
Failed to start pydpiper.service: Unit docker.service not found.
pi@moode:~/pydPiper $

what to do ?

Jem