systemd startup script for open-roberta

ora.service

# /lib/systemd/system/ora.service

[Unit]
Description=OpenRoberta Lab Server
After=network.target

[Service]
ExecStartPre=/usr/bin/touch /var/log/ora.log
ExecStartPre=/bin/chown pi: /var/log/ora.log
ExecStartPre=/sbin/iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 1999
ExecStart=/bin/bash -c '/opt/robertalab/ora.sh --start-server >/var/log/ora.log 2>&1'
WorkingDirectory=/opt/robertalab
StandardOutput=inherit
StandardError=inherit
PermissionsStartOnly=true
Restart=always
User=pi

[Install]
WantedBy=multi-user.target