Docker Compose Validator

How it works

Documentation

About Docker Compose Validator

Validate a Docker Compose file for YAML syntax, Compose structure, configuration references, and common deployment concerns before sharing or running it.

How to use

Paste one Docker Compose YAML document into the workspace, choose an example or use your own configuration, then select Validate Compose.

What it checks

SyntaxDock combines YAML parsing, schema validation, reference checks, and targeted configuration diagnostics in one browser-local result.

Schema validation

Validation uses a pinned local copy of the Compose Specification schema. It checks the supported Compose structure without fetching a schema while you validate.

Configuration references

The validator finds references to undeclared services, networks, and named volumes so configuration relationships are clear before deployment.

Security and reliability checks

It highlights floating image tags, missing healthchecks, privileged containers, host networking, duplicate published ports, empty environment values, and sensitive bind mounts.

Warnings vs errors

Schema and reference violations are errors. Best-practice diagnostics do not necessarily mean Docker Compose would reject the file. Warnings and recommendations help you review security and reliability trade-offs.

FAQ

Your Compose file is processed locally in your browser. Your YAML, service names, images, environment variables, mount paths, URLs, and diagnostics never leave your browser.

For examples and workflow details, read the Docker Compose validation guide.