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Docker Compose YAML Validator.

Inspect docker-compose.yml configurations for syntax errors, unquoted port mappings, and service definition oversights.

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docker-compose.yml

Docker Compose Analysis

Common Docker Compose Configuration Pitfalls & Solutions

Docker Compose simplifies multi-container orchestration. However, subtle YAML formatting errors can cause mysterious runtime crashes during docker compose up. Our Docker Compose YAML validator checks your service definitions and highlights common gotchas:

The Port Quoting Pitfall: Always write "80:80" or "8080:8080" with quotation marks. Unquoted ports can be parsed as base-60 sexagesimal integers in YAML 1.1 parsers.

Image or Build Requirement: Every service declaration in services: must specify an image: tag or a build: context.

Knowledge Base

Frequently Asked Questions.

Everything you need to know about YAML to JSON conversion, syntax formatting, and privacy.

What does the Docker Compose validator check for?

It verifies docker-compose.yml file structures, services definitions, image vs build declarations, container port mappings (including unquoted port integer pitfalls like 80:80), volume bindings, and environment variables.