Hashrocket's post "Build the Ultimate Elixir CI with GitHub Actions" has significantly influenced the Elixir community by providing a widely accepted setup for continuous integration (CI). While the basic setup includes steps like setting up Elixir, restoring cache, and running tests, the team at Felt has expanded on this by implementing more advanced practices. These include deploying a staging environment for every pull request (PR), parallelizing CI tasks for quicker feedback, and using static analysis tools to enhance code quality. They also created a custom GitHub Action to streamline repetitive setup tasks and implemented strategies to handle flaky builds by automatically clearing caches when necessary. Additional practices include reporting code coverage, leveraging Dependabot for dependency management, and planning future enhancements like end-to-end testing and more powerful build machines. The overarching goal is to maximize developer efficiency by providing fast, comprehensive feedback and reducing the cognitive load associated with PR reviews.