Github docker workflow

Use github workflow to build and push docker image to dockerhub.

Add docker github workflow (#10)

Update lockable dependency

Use lockable with HTTP resources support (#9)

update lockable dependency

v0.3.1

lockable@0.4.2 (#8)

update lockable dependency

v0.3.0

update lockable dependency (#7)

Update py-lockable dependency

just cleanup dependencies.

Docker image is here: https://hub.docker.com/layers/jussiva/robot-lockable/version-0.2.1/images/sha256-43dc7ae75260e5422cce0873b58cbe155b89e1eae57fef3191fff5a2f74e3c50?context=repo

Dockerized

Introduce dockerfile and dockerhub image.
Release also contains fixes for doc generation.

Initial release

Basic functionality exists for local and remote keywords.

Keywords:

Lock   <requirements>    <timeout_s>
Unlock   <resource_info>