Issue in docker build

[bpstewar]

When running locally using sudo docker build --tag rampbase . I get the following error at step 4:

Step 4/24 : RUN apt-get update && apt-get install -y python3-opencv
 ---> Running in 0c1070c90ab0
Ign:1 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  InRelease
Err:2 https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  Release
  Could not handshake: Error in the pull function. [IP: 152.195.19.142 443]
Hit:3 http://archive.ubuntu.com/ubuntu focal InRelease
Get:4 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Get:5 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:6 http://archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
Get:7 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [2169 kB]
Get:8 http://archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages [1654 kB]
Get:9 http://security.ubuntu.com/ubuntu focal-security/multiverse amd64 Packages [27.5 kB]
Get:10 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [906 kB]
Get:11 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages [1541 kB]
Get:12 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [2633 kB]
Get:13 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [1201 kB]
Get:14 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 Packages [30.2 kB]
Get:15 http://archive.ubuntu.com/ubuntu focal-backports/main amd64 Packages [55.2 kB]
Get:16 http://archive.ubuntu.com/ubuntu focal-backports/universe amd64 Packages [27.4 kB]
Reading package lists...
E: The repository 'https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64  Release' no longer has a Release file.
The command '/bin/bash -c apt-get update && apt-get install -y python3-opencv' returned a non-zero code: 100

I see this is an issue installing OpenCV, so maybe not your exact responsibility, but any suggestions?

[cjohnstonconsulting]

Hi, sorry for late response, did you work past this? I haven't encountered this particular issue before. It was also described here and it turned out to be a problem with being behind a proxy (but you probably googled and found this).