Documentation to use VSCode container for demo & testing

[titom73]

Change Summary

Add content about new VScode container

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 change)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Documentation content changes
• Other (please describe):

Related Issue(s)

N/A

Component(s) name

• Website
• Makefile

Proposed changes

• New How-to to explain how to leverage VSCode for demo & testing
• Update Makefile to allow user to start VScode container to edit files quickly
• Add new target in Makefile to refresh deployed Makefile from AVD

How to test

# Start dev stack
$ make start

# Connect to MKDOC server
$ open http://127.0.0.1:8000/docs/how-to/vscode-container/

# Test VSCode container with default port mapping 8080
$ make vscode 

# Test VSCode container with custom port mapping
$ make vscode VSCODE_PORT=8081

Checklist:

• I have read the CONTRIBUTING document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• All new and existing tests passed (pre-commit, make linting and make sanity-lint).
• I have updated molecule CI testing accordingly