docs: add cypress/browsers examples

[MikeMcC399]

• contributes to resolution of Add examples: cypress/base, cypress/browsers and GitHub Actions #1109

Change

The browsers/README is enhanced to describe how to use the Cypress Docker image cypress/browsers in

• interactive mode
• building a new image from cypress/browsers

A Dockerfile is added to the examples/basic directory.

[MikeMcC399]

Preview

https://github.com/MikeMcC399/cypress-docker-images/blob/add-examples-browsers/browsers/README.md

[cypress-app-bot]

• Create a Draft Pull Request if your PR is not ready for review. Mark the PR as Ready for Review when you're ready for a Cypress team member to review the PR.

[MikeMcC399]

• This builds on the previous PR docs: add cypress/base examples #1110 by using the same example directory and adding descriptions in the README for cypress/browsers to show testing with Chrome instead of the default Electron browser.