Docker CI Lint
Runs docker-ci-lint to analyze Dockerfiles for syntax errors, best practices violations, and security issues within CI/CD pipelines. DevOps engineers and developers use it to validate configurations before building images, integrating via MCP for automated checks in GitHub Actions or Jenkins.
Overview
The Docker CI Lint MCP server integrates the docker-ci-lint tool, enabling programmatic analysis of Dockerfiles in continuous integration environments. It scans for common issues like deprecated instructions, inefficient layer ordering, unused secrets, and potential vulnerabilities, outputting structured reports for automated workflows.
Key Capabilities
- Core linting function: Executes docker-ci-lint on Dockerfile content or paths, returning JSON or text reports with line-specific errors, warnings, and suggestions.
- CI-optimized output: Formats results for parsing in pipelines, including exit codes for pass/fail decisions.
- Supports Hadolint ruleset: Checks against standard Dockerfile best practices and customizable rules.
Use Cases
- Pre-commit validation: In GitHub Actions, call the lint function on staged Dockerfiles to block merges with issues like USER root in production images.
- Pipeline gating: Integrate into Jenkins or GitLab CI to lint Dockerfiles before docker build, catching multi-stage build inefficiencies early.
- Security audits: Scan repositories for exposed API keys or unsafe COPY operations during scheduled CI jobs.
- Monorepo management: Lint multiple Dockerfiles across services in a single workflow, aggregating reports for team reviews.
Who This Is For
DevOps engineers maintaining CI/CD pipelines, container platform developers, and teams using Docker for microservices deployment. Suited for those enforcing Dockerfile quality at scale without manual reviews.