zammad/contrib/systemd/zammad.service

[Unit]
Description=Zammad
After=syslog.target
After=network.target

[Service]
Type=simple
User=<zammad
Group=zammad

ExecStart=bash -l -c "RAILS_ENV=production bundle exec script/websocket-server.rb start -d -i tmp/pids/websocket.pid -p 6042 -b 127.0.0.1"

ExecStop=bash -l -c "RAILS_ENV=production bundle exec script/websocket-server.rb stop -d -i tmp/pids/websocket.pid -p 6042 -b 127.0.0.1"

# Give a reasonable amount of time for the server to start up/shut down
TimeoutSec=300

[Install]
WantedBy=multi-user.target