wiki/docs/Docker/restart-policies.md

Restart Policies

Restart policies control whether and how Docker attempts to restart a container.

option	description
no	does not restart automatically
on-failure[:max-retry]	restarts only when the container exits with a non-zero exit code, and when it has been restarted fewer than max-retry times.
always	always restarts the container if it stops. If it is manually stopped, it is restarted only when Docker daemon restarts or the container itself is manually restarted.
unless-stopped - always restarts the container unless it is manually stopped. Does not restart when the docker daemon is restarted.

If no restart policy is provided, the default is no.

Example

version: '3.3'
services:
    simple-torrent:
        ports:
            - '3000:3000'
        volumes:
            - '/path/to/my/downloads:/downloads'
            - '/path/to/my/torrents:/torrents'
        image: boypt/cloud-torrent
        restart: unless-stopped