scanservjs is a web UI frontend for your scanner. You can perform scans using your USB or network scanner through this web UI. The application allows you to share one or more scanners (using SANE) on a network without the need for drivers or complicated installation. To discover your devices, open the docker console and run: scanimage -L This will return a list of discovered devices. Copy the device id e.g. "epson2:libusb:001:002" and put it into the devices variable.