How to Validate a docker-compose.yml File
Step-by-step guide to checking your docker-compose.yml for syntax errors, port conflicts, and missing configuration using the DevHexLab Docker Compose Validator.
Tool Used
Docker Compose Validator
Open the Docker Compose Validator
Navigate to /tools/developer/docker-compose-validator.
Paste your docker-compose.yml
Copy the contents of your docker-compose.yml file and paste it into the editor. The tool accepts both docker-compose v2 and v3 format files.
Review the validation results
The validator checks YAML syntax, required service fields (image or build), port mapping format, volume definitions, and network references. Any issues are listed with the service name and a description of the problem.
Fix issues and re-validate
Correct the flagged issues in the editor and the validation updates automatically. Once all checks pass, copy the corrected YAML back to your project file.
All done!
You are ready to use Docker Compose Validator like a pro.