if it halted unexpectedly, first check the logs with
docker container inspect <container_id>
for clues on what went wrong - look out for error messages or non-zero exit codes. if you find issues that require fixing but want to keep current state intact before rebooting, consider using a snapshot tool like '''ranchers image saving feature instead of simply restarting the service with
docker start
.
link:
https://www.hongkiat.com/blog/debug-stopped-docker-container/