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We were not using sudo, but now the main images should be similarly fast. More at: https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration - [x] I have read [freeCodeCamp's contribution guidelines](https://github.com/freeCodeCamp/freeCodeCamp/blob/master/CONTRIBUTING.md). - [x] My pull request has a descriptive title (not a vague title like `Update index.md`) - [x] My pull request targets the `master` branch of freeCodeCamp. - [x] None of my changes are plagiarized from another source without proper attribution. - [x] My article does not contain shortened URLs or affiliate links.