zammad/script/systemd/zammad-rails.service

[Unit]
Description=Zammad rails server
After=syslog.target
After=network.target
After=zammad.service
Requires=zammad.service

[Service]
EnvironmentFile=/etc/zammad/zammad.env
User=zammad
Group=zammad
Restart=always

WorkingDirectory=/opt/zammad

ExecStart=/bin/bash -l -c "${BUNDLE_BINARY} exec script/rails server -b ${ZAMMAD_BIND_IP} -p ${ZAMMAD_RAILS_PORT}"

[Install]
WantedBy=zammad.service