Registry skeleton

registry.service

# /etc/systemd/system/registry.service

[Unit]
Description=Registry
Documentation=https://docs.docker.com/registry/configuration/
Wants=network-online.target
After=network-online.target

[Install]
WantedBy=multi-user.target

[Service]
Type=single
KillMode=process
Restart=always
RestartSec=15s
User=registry
ExecStartPre=-/bin/mkdir -p /var/lib/registry
ExecStartPre=-/bin/chown -R registry:registry /var/lib/registry
ExecStart=/usr/local/bin/registry serve \
    /etc/registry.yaml

registry.yaml

# /etc/registry.yaml
version: 0.1
storage:
  filesystem:
    rootdirectory: /var/lib/registry
  maintenance:
    uploadpurging:
      enabled: true
      age: 168h
      interval: 24h
      dryrun: false
    readonly:
      enabled: true

http:
   addr: :5000
   secret: cac0a7d3f7862decd17516869fe3ad94