Cannot connect to Oracle 19 instance running in a container under Ubuntu 20.04 via WSL2 on Docker for Windows
Well, I found the culprit. The port assignment
      - 8080:8080

is not needed (it was legacy from previous work), and once I take it out, I can connect via SQL Developer and my app is happy as well. Not sure I understand the reason, but for now I am back in business.