--- # increase memory size mem_size: 8192 # increase disk size to store docker images dsk_size: 100 firewall_in: - {proto: tcp, port: 22, from: [172.20.20.0/22]} - {proto: tcp, port: 443, from: [172.20.20.0/22]} - {proto: tcp, port: 9100, from: [172.20.20.0/22]}