Improve compatibility with older systemd versions.

Author: poupas

systemd/tls-proxy-controller.service

@@ -5,4 +5,4 @@ Description=TLS Proxy Controller
 WorkingDirectory=/etc/tls-proxy
 Type=oneshot
 EnvironmentFile=/etc/tls-proxy/system.env
-ExecStart=/bin/sh -c "docker-compose run --rm tls-controller | grep -i 'reload is required' && echo 'Will reload Nginx...' && (docker-compose top | grep nginx: | awk '{print $2}' | xargs kill -HUP) || exit 0"
+ExecStart=/bin/sh -c "docker-compose run --rm tls-controller | grep -i 'reload is required' && echo 'Will reload Nginx...' && docker-compose kill -s SIGHUP nginx || exit 0"