3.4 KiB
Docker Registry
Docker Registry is a container image distribution registry developed by Docker Inc.
This playbook supports installing a container image registry which is:
- completely public, when it comes to pulling images
- IP-restricted, when it comes to pushing images
Authentication is not supported.
Dependencies
This service requires the following other services:
- a Traefik reverse-proxy server
Configuration
To enable this service, add the following configuration to your vars.yml file and re-run the installation process:
########################################################################
# #
# docker-registry #
# #
########################################################################
docker_registry_enabled: true
docker_registry_hostname: registry.example.com
# Uncomment the line below if you'd like to allow for image deletion.
# docker_registry_storage_delete_enabled: true
# Only whitelisted IPs will be able to perform DELETE, PATCH, POST, PUT requests against the registry.
# All other IP addresses get read-only (GET, HEAD) access.
docker_registry_private_services_whitelisted_ip_ranges:
- 1.2.3.4/32
- 4.3.2.1/32
########################################################################
# #
# /docker-registry #
# #
########################################################################
In the example configuration above, we configure the service to be hosted at https://registry.example.com.
Usage
After installation, you should be able to:
- pull images from your registry from any IP address
- push images to your registry from the whitelisted IP addresses (
docker_registry_private_services_whitelisted_ip_ranges)
With custom Traefik configuration (hint: see docker_registry_container_labels_traefik_rule_* variables in the docker-registry role), you may be able to add additional restrictions.
To test pushing images, try the following:
docker pull docker.io/alpine:3.17.2
docker tag docker.io/alpine:3.17.2 registry.example.com/alpine:3.17.2
docker push registry.example.com/alpine:3.17.2
To test pulling images, try the following:
# Clean up from before
docker rmi registry.example.com/alpine:3.17.2
docker pull registry.example.com/alpine:3.17.2
The base URL (e.g. https://registry.example.com) serves an empty (blank) page. To browse your registry's images via a web interface, you may need another piece of software, like Docker Registry Browser.
Recommended other services
- Docker Registry Browser - Web Interface for the Docker Registry HTTP API V2 written in Ruby on Rails
- Docker Registry Purger - a small tool used for purging a private Docker Registry's old tags