Changes in this release:
- Upgraded HandBrake to version 1.2.2.
- Upgraded libva to version 2.4.0.
- Upgraded Intel Media SDK to version 18.4.1.
- Upgraded Intel Media Driver to version 18.4.1.
- Use baseimage based on Alpine Linux 3.9.
- The number of watch folders is now configurable.
- The root output directory used by the automatic video converter is now configurable.
- Added hook invoked after all files in a watch folder are processed.