Docker Registry v2.1

The Docker Registry release brings some major new features to the Docker
Registry along with numerous bug fixes, documentation enhancements and logging
improvements.  More than 150 pull requests were completed by more than 50
contributors.

What’s new?

Support for listing Registry repositories
A specification and implementation of the catalog API allows users to list the
contents of a Registry

Manifest and Layer soft deletion
Manifests and layers can now be deleted by reference.

Pull through caching (experimental)
The Registry can now act as a pull through cache, proxying content from the
Docker Hub.

Storage Drivers
The following storage drivers were contributed to the distribution project by
members of the open source community.

Aliyun OSS.   Open Storage Service (OSS) is a massive, secure and highly
reliable cloud storage service provided by Aliyun.

Ceph.  Ceph is a free software storage platform designed to present object,
block, and file storage from a single distributed computer cluster.

Openstack Swift.  Swift is a highly available, distributed, eventually
consistent object/blob store from Openstack.

And many more...
- API specification clarifications
- Etag support for layers and manifests
- htpasswd support with bcrypt
- Unix socket support
- Client disconnection detection
- A slimmer official image
- Faster push for multi-tagged images

Things to pay close attention to if you are upgrading

If you are running multiple registries behind a load balancer, you need to make
sure that you explicitly specified the same secret for all nodes as per the
configuration documentation (commit).

The Length field in the Notification JSON is being deprecated in favor of Size.
Both are supported in this release (commit).

The location of the config file inside the official image has changed. If you
previously mounted an external configuration file with a volume, you need to
update the location to /etc/docker/registry/config.yml

Docker Registry v2.1

The Docker Registry release brings some major new features to the Docker
Registry along with numerous bug fixes, documentation enhancements and
logging improvements.  In total 203 issues were closed in 151 pull requests by
more than 50 contributors.

What’s new?

Support for listing Registry repositories
A specification and implementation of the catalog API allows users to list the
contents of their Registry

Manifest and Layer soft deletion
Manifests and layers can now be deleted by their reference.

Pull through caching (experimental)
The Registry can now act as a pull through cache, proxying content from the
Docker Hub.

Storage Drivers
The following storage drivers were contributed to the distribution project by
members of the open source community:

Aliyun OSS.   Open Storage Service (OSS) is a massive, secure and highly
reliable cloud storage service provided by Aliyun.

Ceph.  Ceph is a free software storage platform designed to present object,
block, and file storage from a single distributed computer cluster.

Openstack Swift.  Swift is a highly available, distributed, eventually
consistent object/blob store from Openstack.

And many more...
- API specification clarifications
- Etag support for layers and manifests
- htpasswd support with bcrypt
- Unix socket support
- Client disconnection detection
- A slimmer official image
- Faster push for multi-tagged images

v2.0.1: Minor release of Docker Registry 2.0

This release provides bug fixes, stability improvements,
better logging and extra documentation.

- Enable blob streaming upload
- S3 consistency checking and better resource utilization
- Eliminate resource leakage in the notification system
- Request error and storage driver logging
- Documentation corrections and additions

v2.0.0: Initial release of Docker Registry 2.0

First release of the new registry implementation. This provides an
implementation of the new Docker Registry HTTP API V2 for use with Docker 1.6+.
The new API and image manifest format provide faster and more secure image
distribution.

Please see the README for more information.

v2.0.0-rc.4: Optional resumable digest, logging adjustments, documentation

A build flag is now avialable to disable resumable digest support. This allows
installations that cannot use the forked crypto library to revert to using Go's
stdlib. Several fixes have been made to contextual logging output, including
ensuring accurate http response status, authorized user name and correct output
of the version.

The documentation continues to be shaped and massaged.

v2.0.0-rc.3: Driver tracing, documentation, and bugfixes

The main addition in this release candidate is around logging storage driver
calls with performance data and ensuring that log messages have nanosecond
granularity timestamps. Other bugfixes affect upload resource cleanup.

With this candidate, the documentation has undergone a large amount of
refactoring, including additions with various production setups.

v2.0.0-rc.2: Performance enhancements, bugfixes

This is an updated release candidate that includes a performance enhancement
for fetching manifest signatures. The backend path matching validity has been
relaxed to defer case-sensitive support to the storage backend.

v2.0.0-rc.1: Documentation, layer caching and bugfixes

This is an updated release candidate that includes layer info caching and some
bugfixes for cloudfront support. Documentation has also been heavily updated
but is still not complete.

v2.0.0-rc.0: Initial release candidate

This is the first release candidate for Registry 2.0. Since the alpha release,
we've mostly focused on hardening and refactoring to bring the software up to
production quality.

v2.0.0-alpha.3: Immutable manifest references, logging

The primary features in this preview are immutable manifest references and
context aware logging. A new README and a documentation outline are accompanied
by several stability improvements, as well.

v2.0.0-alpha.2: Notifications and stability improvements

This third alpha release includes support for webhook notifications. Several
stability improvements are included that address common errors. A debug server
with pprof and expvar can now be enabled.

The build system has been improved, as well.

v2.0.0-alpha.1: Bugfixes, godep and storagedriver improvements

This second alpha release provides fixes for s3 IAM role authentication in
addition to some stability improvements in storage driver. This is still alpha
quality software and should be run with that in mind.

v2.0.0-alpha.0: Docker 1.5 testing revision

This tags the version of the registry used for integration testing in Docker
1.5. This is a pre-release and should not be used without care.