Update Dockerfile.mediator
Update Dockerfile.mediator

Co-Authored-By: Raphael Das Gupta <d1b79ab63d9293755ab9246d172d5c25c1ff4ff8@hsr.ch>
geometalab/osmaxx-frontend,geometalab/osmaxx,geometalab/osmaxx-frontend,geometalab/osmaxx,geometalab/osmaxx,geometalab/osmaxx-frontend,geometalab/osmaxx-frontend,geometalab/osmaxx