RROR: failed to solve: process "/bin/sh -c apt-key adv --keyserver

[MohamedNagyMostafa]

Hello,

I tried to build 'make nvidia_ros_melodic_cuda11-4-2_cudnn8'; however, the process is interrupted by this error.

[atasoglou]

Hello! I just built the image with success but after fixing another problem: There was an issue with the NVIDIA keys. It is basically the same issue as this.
In your posted image however I see that error has to do with the ROS repo-key. This doesn't have an issue in our Dockerfile. I tested that one with just a plain ubuntu 18.04 image and it works fine:

I suggest you try building the image again. For testing the --recv-key you can also try a plain ubuntu:18.04 image as well.

[atasoglou]

closing as issue reported cannot be reproduced