Docker Compose Validator

The validator analyzes Docker Compose files to verify structure, syntax, and compatibility with a selected Compose spec version. It targets DevOps engineers, CI professionals, and developers who author or review compose files for local testing and deployment. It is used during local validation, PR checks, and build pipelines to detect issues early.

Conceptually, the tool parses YAML, resolves anchors, and applies rule-based checks across services, networks, volumes, secrets, and configs. It flags missing required keys, invalid port mappings, improper volume paths, and deprecated keys, providing precise line/column locations and actionable fixes. Advanced analysis includes cross-service dependency validation and version-compatibility guidance.

Value proposition lies in delivering a structured report with concrete error messages and suggested updates, reducing debugging time and aligning with best practices. Unique differentiator is its Compose-spec-centric validation with domain-specific rules beyond generic YAML lint.

Core features include syntax validation, version-aware schema checks, deprecation warnings, best-practice recommendations, and an exportable JSON report suitable for CI. Use cases span validating files in PRs, pre-merge checks, and automated quality gates for multi-service projects.