Docker

[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/65?closed=1)

Features

- Add option on when to use `tls` on Context constructor
- Make context orchestrator field optional

[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/63?closed=1)

Bugfixes

- Fix `win32pipe.WaitNamedPipe` throw exception in Windows containers
- Use `Hostname`, `Username`, `Port` and `ProxyCommand` settings from `.ssh/config` when on SSH
- Set host key policy for ssh transport to `paramiko.WarningPolicy()`
- Set logging level of `paramiko` to warn

Features

- Add support for docker contexts through `docker.ContextAPI`

[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/61?closed=1)

Bugfixes

- Correct `INDEX_URL` logic in build.py _set_auth_headers
- Fix for empty auth keys in config.json

Features

- Add `NetworkAttachmentConfig` for service create/update

Miscellaneous

- Bump pytest to 4.3.1
- Adjust `--platform` tests for changes in docker engine
- Update credentials-helpers to v0.6.3

[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/62?closed=1)

Bugfixes

- Unified the way `HealthCheck` is created/configured

Miscellaneous

- Bumped version of websocket-client

[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/60?closed=1)

Bugfixes

- Fixed an obsolete import in the `credentials` subpackage that caused import errors in
Python 3.7

Miscellaneous

- Docs building has been repaired

[List of PRs / issues for this release](https://github.com/docker/docker-py/milestone/57?closed=1)

Breaking changes

- Support for Python 3.3 and Python 3.4 has been dropped
- `APIClient.update_service`, `APIClient.init_swarm`, and
`DockerClient.swarm.init` now return a `dict` from the API's response body
- In `APIClient.build` and `DockerClient.images.build`, the `use_config_proxy`
parameter now defaults to True
- `init_path` is no longer a valid parameter for `HostConfig`

Features

- It is now possible to provide `SCTP` ports for port mappings
- `ContainerSpec`s now support the `init` parameter
- `DockerClient.swarm.init` and `APIClient.init_swarm` now support the
`data_path_addr` parameter
- `APIClient.update_swarm` and `DockerClient.swarm.update` now support the
`rotate_manager_unlock_key` parameter
- `APIClient.update_service` returns the API's response body as a `dict`
- `APIClient.init_swarm`, and `DockerClient.swarm.init` now return the API's
response body as a `dict`

Bugfixes

- Fixed `PlacementPreference` instances to produce a valid API type
- Fixed a bug where not setting a value for `buildargs` in `build` could cause
the library to attempt accessing attributes of a `None` value
- Fixed a bug where setting the `volume_driver` parameter in
`DockerClient.containers.create` would result in an error
- `APIClient.inspect_distribution` now correctly sets the authentication
headers on the request, allowing it to be used with private repositories
This change also applies to `DockerClient.get_registry_data`