CI/CD
MegaLinter is a ready-to-use linting orchestrator that runs 100+ linters across all major languages and file types in a single Docker container. Instead of configuring Flake8, ESLint, hadolint, ShellCheck, markdownlint, yamllint, and a dozen others separately, MegaLinter runs all of them with one GitHub Actions workflow. It produces
CI/CD
Hadolint is a Dockerfile linter that catches common mistakes, security antipatterns, and best-practice violations before your images are built. A misconfigured Dockerfile can produce bloated images, introduce vulnerabilities, or fail silently in production. Hadolint in CI prevents these issues from reaching your registries. Why Dockerfile Linting Matters Dockerfiles are
CI/CD
Shell scripts are everywhere in software engineering — build scripts, deployment automation, CI pipelines, startup scripts, Docker entrypoints. They're also notoriously buggy. Word splitting, unquoted variables, unchecked error codes, and portability issues cause production failures that are difficult to reproduce and debug. ShellCheck catches these issues automatically before they
CI/CD
Ruff is a Python linter and formatter written in Rust that runs 10-100× faster than the tools it replaces. It implements rules from Flake8, isort, pylint, pyupgrade, and more — consolidating what used to be 5+ tools into one. For CI pipelines, Ruff's speed makes code quality gating
CI/CD
Mypy is Python's most widely used static type checker. It catches type errors before runtime — wrong argument types, missing attributes, incorrect return types — the kind of bugs that slipped through Python's dynamic typing for decades. Integrating Mypy into CI transforms it from a developer convenience into
Testing
DeepSource combines static analysis with automated code fixes — it doesn't just report issues, it opens PRs to fix them. This guide covers DeepSource setup, autofix configuration, coverage enforcement, and integrating quality gates into your CI pipeline. What Makes DeepSource Different Most code quality tools report problems and stop.
Testing
SonarQube and CodeClimate are both code quality platforms, but they serve different teams. SonarQube is deeper and more configurable for enterprise; CodeClimate is simpler, faster to adopt, and better integrated with GitHub. This guide compares them across features, CI integration, and team fit. Overview Both tools analyze code for quality
Testing
Stryker is the leading mutation testing framework for JavaScript and TypeScript. It supports Jest, Vitest, Mocha, Jasmine, and more — integrating into your existing test setup without requiring you to change your tests. If your tests pass but you don't know whether they'd catch a real bug,