Integrates Hadolint for Dockerfile linting

[HarshCasper]

Changes:

• Adds a .hadolint.yml for linting Dockerfiles using Hadolint
• Adds relevant docs to run Hadolint locally
• Integrates the CI with Hadolint to look for errors on every commit
• Adds hadolint pre-commit hook

Types of changes

What types of changes does your code introduce?

Put an x in the boxes that apply

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Build related changes
• Other (please describe):

Testing

Requires testing

• Yes
• No

[iameskild]

@HarshCasper thanks for working on this! Now that Amit has cleaned up CI, we should aim to get all green checks before merging. I would suggesting:

• merging main into this branch
• fixing the vale related errors by by having vale ignore instances of Hadoling and Dockerfile

[iameskild]

Thanks @HarshCasper! LGTM