Docker Registry Mirror Unit File

docker-registry-mirror.service

[Unit]
Description=Docker Registry Mirror

[Service]
Restart=always
RestartSec=10
ExecStartPre=-/usr/bin/docker kill %p
ExecStartPre=-/usr/bin/docker rm %p
ExecStartPre=/usr/bin/docker pull registry
ExecStartPre=/usr/bin/sudo /usr/bin/mkdir -p /home/core/data/%p
ExecStart=/usr/bin/docker run \
  --rm \
  --name %p \
  --publish 9000 \
  --env STANDALONE=false \
  --env REGISTRY_PORT=9000 \
  --env MIRROR_SOURCE=https://registry-1.docker.io \
  --env MIRROR_SOURCE_INDEX=https://index.docker.io \
  --volume /home/core/data/%p:/tmp/registry \
  registry
ExecStop=/usr/bin/docker stop %p

[X-Fleet]
MachineMetadata=%p=1

user-data

write_files:
  - path: /etc/systemd/system/docker.service.d/50-registry-mirror.conf
    content: |
        [Service]
        Environment=DOCKER_OPTS='--registry-mirror=http://$private_ipv4:9000'