Call out 3rd party containers more clearly

[balloob]

Breaking change

Proposed change

Previously 3rd party containers would show up as "Unknown". Now it will more clearly indicate it's a custom container.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
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• Link to documentation pull request:

Checklist

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