Paste your docker-compose.yml to catch common mistakes before you run docker compose up.

What it checks

• Missing image or build directive
• Duplicate host port mappings
• depends_on referencing non-existent services
• Deprecated version field
• Missing restart policy
• Hardcoded passwords in environment variables
• Untagged images (implicit :latest)
• Privileged mode usage

Limitations

This is a structural linter, not a full YAML parser. It catches the most common mistakes but won’t validate every edge case. For full validation, use docker compose config locally.

Related resources

• Docker cheat sheet
• Docker complete guide