Move to pcapyng

[jayjb]

Proposed changes

This commit makes some improvements to our docker handling for opencanary. The changes include:

• Added build docker and push to dockerhub
• Move to pcapy-ng because it is receiving active development
• Use host for network_mode by default.

Types of changes

What types of changes does your code introduce to this repository?
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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Documentation Update

Checklist

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• Lint and unit tests pass locally with my changes (if applicable)
• I have run pre-commit (pre-commit in the repo)
• I have added necessary documentation (if appropriate)