[Unit]
Description=MCR Container Registry
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=mcr
Group=mcr
ExecStart=/usr/local/bin/mcrsrv server --config /srv/mcr/mcr.toml
Restart=on-failure
RestartSec=5

# 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

# Allow binding to privileged ports if needed
AmbientCapabilities=CAP_NET_BIND_SERVICE

[Install]
WantedBy=multi-user.target