[BugFix] fixing ssl issue in docker file

[atharvasharma61]

Is your feature request related to a problem? Please provide an existing Issue # , or describe. resolves #561

Describe the solution you are proposing Adding pypi.python.org and other related domains as trusted hosts.

Describe alternatives you've considered NA

Additional context NA

Check List

• [x] Backport Labels added.
• [x] New functionality includes testing.
  • [x] All tests pass
• [x] New functionality has been documented.
  • [x] New functionality has javadoc added
• [x] Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[dblock]

Thanks for fixing this! Can one of the maintainers please review and merge?