Updated November 16, 2023
The issue has been resolved.
after several checks, the cause of the forum not being linked was found and resolved successfully.
The problem we encountered this time is that port 587 is occupied and the container cannot start.
Temporary solution:
1, use the command to view the process occupying port 587:
netstat -tunlp | grep 587
2, use the command to kill the occupied port number process:
kill -9 xxx
3. Restart the docker container:
cd /var/discourse
docker restart app