refactor: update .dockerignore

[HuanWuCode]

Details

Update .dockerignore

Motivation

Make the comment style consistent and easier to read

Pull request checklist

• [n/a] Addresses an existing issue: #0000
• [n/a] Ran yarn fastpass
• [n/a] Added/updated relevant unit test(s) (and ran yarn test)
• [n/a] Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• [Y] PR title AND final merge commit title both start with a semantic tag (fix:, chore:, feat(feature-name):, refactor:). See CONTRIBUTING.md.
• [n/a] (UI changes only) Added screenshots/GIFs to description above
• [n/a] (UI changes only) Verified usability with NVDA/JAWS