Aus einem Docker Container drucken https://aapjeisbaas.nl/post/pdf-network-printing-without-drivers/ https://www.alecburton.co.uk/2017/printing-from-a-docker-container/ File-Upload in Flask https://stackabuse.com/step-by-step-guide-to-file-upload-with-flask/ https://roytuts.com/python-flask-rest-api-file-upload/