shairport-sync 4.3.6

[BrewTestBot]

Created by brew bump

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Created with brew bump-formula-pr.

release notes

This update contains an MQTT documentation update, Docker build updates and a minor bug fix. It is recommended for all users.
Bug Fix

Fix a potential bug (no issues reported) by checking that a buffer is not zero before attempting to deallocate it.

Documentation Updates

Show how to use MQTTThing with Homebridge to represent Shairport Sync’s active status. Thanks to keefar for the PR.
Correct and clarify the statistics documentation.

The descriptions of Net Sync PPM and All Sync PPM were partly swapped -- this has been corrected.
Generally clarify the language and harmonize the wording with the introduction.

Many thanks to willmo for the PR.


Fix a typo in the configuration file. Many thanks to Justin.

Docker Build Optimisation
Improve the Dockerfile build sequences as follows:

Build each dependency in a separate stage, facilitating parallel builds.
Define default value for ARGS, permitting easier local docker builds.
Clone the specified branch only, and to a depth of 1, thus getting relevant data faster.
Copy files in a one-off command, reducing the amount of Docker layers created.

Many thanks to David Girón for the PR.

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