user-data

#cloud-config
---
coreos:
  units:
    - name: stop-docker-socket.service
      command: start
      content: |
        [Unit]
        Description=stop docker.socket

        [Service]
        Type=oneshot
        ExecStart=/usr/bin/systemctl stop docker.socket
        ExecStartPost=/usr/bin/systemctl mask docker.socket
    - name: docker-registry.service
      command: start
      content: |
        [Unit]
        Description=Docker Registry server

        [Service]
        TimeoutStartSec=10min
        ExecStartPre=/bin/sh -c "docker history registry:latest >/dev/null || docker pull registry:latest"
        ExecStart=/usr/bin/docker run --name docker-registry -e STORAGE_PATH=/registry -e SEARCH_BACKEND=sqlalchemy -p 5000:5000 registry:latest
    - name: docker-tcp.socket
      command: start
      enable: true
      content: |
        [Unit]
        Description=Docker Socket for the API

        [Socket]
        ListenStream=2375
        Service=docker.service
        BindIPv6Only=both

        [Install]
        WantedBy=sockets.target