How to use yarn berry behind a proxy with authentication inside a Docker?

[Holt59]

I am running node:lts-slim and trying to do a yarn set version berry but I'm having issue with proxies.

My .yarnrc.yml looks like this:

httpsProxy: http://USERNAME:PASSWORD@PROXY_URL:PROXY_PORT
httpProxy: http://USERNAME:PASSWORD@PROXY_URL:PROXY_PORT

From what I can see, the authentication is not working because I'm getting 407 from the proxy when doing yarn set version berry:

Request Error: tunneling socket could not be established, statusCode=407
    at ClientRequest.<anonymous> (/root/plop/.yarn/releases/yarn-stable-temp.cjs:195:14340)
    at Object.onceWrapper (node:events:632:26)
    at ClientRequest.emit (node:events:529:35)
    at o.emit (/root/plop/.yarn/releases/yarn-stable-temp.cjs:190:90286)
    at ClientRequest.c (/root/plop/.yarn/releases/yarn-stable-temp.cjs:195:33205)
    at Object.onceWrapper (node:events:632:26)
    at ClientRequest.emit (node:events:517:28)
    at Socket.socketOnData (node:_http_client:581:11)
    at Socket.emit (node:events:517:28)
    at addChunk (node:internal/streams/readable:335:12)
    at ClientRequest.c (/root/plop/.yarn/releases/yarn-stable-temp.cjs:195:33094)
    at Object.onceWrapper (node:events:632:26)
    at ClientRequest.emit (node:events:517:28)
    at Socket.socketOnData (node:_http_client:581:11)
    at Socket.emit (node:events:517:28)
    at addChunk (node:internal/streams/readable:335:12)
    at readableAddChunk (node:internal/streams/readable:308:9)
    at Readable.push (node:internal/streams/readable:245:10)
    at TCP.onStreamRead (node:internal/stream_base_commons:190:23)

How can I use yarn berry behind a proxy in this configuration?