Node.js 22.21.0+ natively supports HTTP_PROXY, HTTPS_PROXY, and
NO_PROXY environment variables via NODE_USE_ENV_PROXY, eliminating the
need for undici and global-agent workarounds. This also works with
node-fetch and cross-fetch since they delegate to node:http/node:https
without overriding the HTTP agent.
Add a new corporate proxy tutorial under docs/ with the recommended
approach and update the legacy guide in contrib/ to point to it.
Update proxy references in the deployment, keeping-backstage-updated,
and TechDocs CLI docs to mention NODE_USE_ENV_PROXY.
Signed-off-by: Jon Koops <jonkoops@gmail.com>
Jon Koops