I did dream of hearing the doorbell & woke up. I wasn’t surprised to find that the sun had risen and it was early dawn at 6 am. In my dream, a male stranger rang my doorbell. We didn’t know each other and he left. After a short while, another male stranger rang my doorbell. We didn’t have anything to say or do with each other and he went away too. Then I woke up.
I did my own dream interpretation. The strangers ringing my doorbell were images created by my brain. They were telling me it was time to wake up. The ringing doorbell was supposed to emulate my alarm clock.