Recommend Microsoft's Docker extension

[bwateratmsft]

We're recommending a third party extension for Docker when there is a first party extension. We should recommend the first party extension.

[prmerger-automator]

@bwateratmsft : Thanks for your contribution! The author(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit cd58211:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/javascript/node-azure-tools.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[Jak-MS]

@diberry

• Can you review this PR?
• IMPORTANT: When this content is ready to merge, you must add #sign-off in a comment or the approval may get overlooked.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[KarlErickson]

@diberry ping

[diberry]

#sign-off