Overviewer systemd generation script

overviwer.service

# NOTE: this file tested in container which runs minecraft server and overviwer and all things works under root permissions
# root@minecraft:~# cat /etc/systemd/system/overviewer.service 
[Unit]
Description=Overviewer Minecraft map generator
After=minecraft.service

[Service]
Type=oneshot
WorkingDirectory=/root/overviewer/
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "say DISABLING SERVER SAVE FEATURE"^M'
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "save-off"^M'
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "say SAVING SERVER MAP"^M'
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "save-all"^M'
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "say STARTING MAP RENDERING"^M'
ExecStart=/root/overviewer/map_generate_cfg.sh
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "say FINISHED RENDERING MAP https://your-domain.com"^M'
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "say ENABLING SERVER SAVE FEATURE"^M'
ExecStart=/usr/bin/screen -p 0 -S mc-0 -X eval 'stuff "save-on"^M'

User=root
Group=root

[Install]
WantedBy=multi-user.target