Work in progress...

Description

Run local dev environment for AET using Docker.

Motivation and Context

Within this Pull Request a new approach to running AET dev environment is introduced.
Also, vagrant environment which is not maintained any more was removed.

Upgrade notes (if appropriate)

See CONTRIBUTING.md and dev-env instructions on how to run AET dev environment.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• I have reviewed (and updated if needed) the documentation regarding this change

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I hereby agree to the terms of the AET Contributor License Agreement.