If your custom env creation with startup script failed with this error, report to Nvidia

Since the Terra base image currently has a dependency on Nvidia software packages for GPU-enabled capabilities, you'll sometimes run into issues when creating custom cloud environments with startup scripts.

In particular, if your startup script has the typical `apt-get install` command, you may see the following error message (edited for relevance)

...

3.791 Fetched 41.6 MB in 3s (12.9 MB/s)
3.791 Reading package lists...
5.577 W: Skipping acquire of configured file 'sudo/binary-amd64/Packages' as repository 'http://us.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'sudo' (component misspelt in sources.list?)
5.577 W: Skipping acquire of configured file 'update/binary-amd64/Packages' as repository 'http://us.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'update' (component misspelt in sources.list?)
5.577 W: Skipping acquire of configured file 'apt/binary-amd64/Packages' as repository 'http://us.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'apt' (component misspelt in sources.list?)
5.577 W: Skipping acquire of configured file 'libv8-3.14-dev/binary-amd64/Packages' as repository 'http://us.archive.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'libv8-3.14-dev' (component misspelt in sources.list?)
5.577 W: Skipping acquire of configured file 'libexempi3/binary-amd64/Packages' as repository 'http://security.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'libexempi3' (component misspelt in sources.list?)
5.577 W: Skipping acquire of configured file 'sudo/binary-amd64/Packages' as repository 'http://security.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'sudo' (component misspelt in sources.list?)
5.577 W: Skipping acquire of configured file 'update/binary-amd64/Packages' as repository 'http://security.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'update' (component misspelt in sources.list?)
5.577 W: Skipping acquire of configured file 'apt/binary-amd64/Packages' as repository 'http://security.ubuntu.com/ubuntu bionic InRelease' doesn't have the component 'apt' (component misspelt in sources.list?)
5.577 E: Failed to fetch https://developer.download.nvidia.com/compute/cuda/repos/ubuntu2004/x86_64/Packages.gz  File has unexpected size (1127072 != 1126689). Mirror sync in progress? [IP: 152.195.19.142 443]
5.577    Hashes of expected file:
5.577     - Filesize:1126689 [weak]
5.577     - SHA256:7cee2584ca6d97b2f07018ba4f9c3c473fb4e299ed170968a1f8c99c090cc59f
5.577     - SHA1:4ee24fac5518a3fcc3702590a0dab32c95484c54 [weak]
5.577     - MD5Sum:593faff511765d11055c9919bf2e3bf8 [weak]
5.577    Release file created at: Thu, 17 Aug 2023 19:03:05 +0000
5.577 E: Some index files failed to download. They have been ignored, or old ones used instead.
------
Dockerfile:31

...

This is some error that is simply due to unlucky timing.

It means Nvidia is doing some maintenance on their end. 

You can refer to this ticket about how to let them know about the issue.

Then, Good luck!