Act - Local Workflow Testing Use this skill when testing GitHub Actions workflows locally with act. This covers act CLI commands, Docker setup, debugging, and best practices for fast local iteration on CI/CD workflows. Installation macOS Linux Windows From Source Basic Usage Run All Workflows Run Specific Events Run Specific Workflows List Available Workflows Validation and Dry Runs Dry Run Graph Visualization Docker Configuration Default Runners Act uses Docker images to simulate GitHub's runners: Custom Platform Images Create file in project root: Or use command line: Reusing Docker Contain…