Invalid ROS dockers

[Rick-v-E]

The ROS docker files seems to be broken since yesterday:

GPG error: http://packages.ros.org/ros/ubuntu focal InRelease: The following signatures were invalid: EXPKEYSIG F42ED6FBAB17C654 Open Robotics <info@osrfoundation.org>

For people with the same problem as we: a temporary fix for this issue is to add

RUN apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654

at the top of the docker file.

[ThijsRuigrok]

Tnx Rick, this worked for me. When building the docker image I now get the following warning Warning: apt-key output should not be parsed (stdout is not a terminal). But this not a a real problem.