restart nginx container when upstream servers is updated

 https://stackoverflow.com/questions/26291260/restart-nginx-container-when-upstream-servers-is-updated

restarting the container is not advisable when you initialize Docker Swarm because it may remove the nginx service. So if you need an alternative aside docker restart; You can go inside the container and just run nginx -s reload

For example, in docker env, if you have the container named nginx

docker exec <nginx_container_id> nginx -s reload