Support for credentials during build process

[sukrit007]

User Story
As a developer , I need the ability to inject a secret to my build process so that I can pull in artifacts from private repository

Options

• Docker Args
  Use docker build args to pass in credentials but credentials can be seen in history
• Fetch Credentials during RUN command
  • Fetch credentials in RUN command using wget
  • As part of same command, invoke the process that needs it
  • Remove the credentials once you have fetched the private artifacts as part of the same RUN

[sukrit007]

Feel free to add more options / comments to this ticket.