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Dockerfile ADD from api.github.com fails regularly with 504 #1514

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Dockerfile ADD from api.github.com fails regularly with 504#1514

Description

@scpeters
scpeters
opened on Jun 21, 2026

I have observed nightly debbuild jobs fail more than once per day during the Dockerfile ADD of the gzdev version.json file via api.github.com:

example console output

504 Gateway Timeout / unicorn:

Step 17/57 : ADD https://api.github.com/repos/gazebo-tooling/gzdev/git/refs/heads/master version.json
ADD failed: failed to GET https://api.github.com/repos/gazebo-tooling/gzdev/git/refs/heads/master with status 504 Gateway Timeout: <!DOCTYPE html>
<!--

Hello future GitHubber! I bet you're here to remove those nasty inline styles,
DRY up these templates and make 'em nice and re-usable, right?

Please, don't. https://github.com/styleguide/templates/2.0

-->
<html>
  <head>
    <title>Unicorn! &middot; GitHub</title>
...

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