[Unit]
Description=MCR Database Backup

[Service]
Type=oneshot
User=mcr
Group=mcr
ExecStart=/usr/local/bin/mcrsrv snapshot --config /srv/mcr/mcr.toml
ExecStartPost=/usr/bin/find /srv/mcr/backups -name 'mcr-*.db' -mtime +30 -delete

# Security hardening
NoNewPrivileges=true
ProtectSystem=strict
ProtectHome=true
PrivateTmp=true
PrivateDevices=true
ProtectKernelTunables=true
ProtectKernelModules=true
ProtectControlGroups=true
RestrictSUIDSGID=true
RestrictNamespaces=true
LockPersonality=true
MemoryDenyWriteExecute=true
RestrictRealtime=true
ReadWritePaths=/srv/mcr