Thank you everyone for your patience with today’s prolonged outage. If you want to read about what happened and how it was ultimately resolved, here’s the thread: https://meta.discourse.org/t/emergency-help-freecodecamp-discourse-down/57758/15
Basically, there was an anomaly with Docker, and I was unable to troubleshoot it successfully. Ultimately one of Discourse’s cofounders came to the rescue.