Solución de errores "Puerto ya asignado" y YAML en Docker Compose (100% en el navegador)

Description and use

Doctor Compose automatically fixes port conflicts and other Docker Compose errors, running entirely in the browser without sending configurations to a server.

Problem

Developers encounter port collision errors when multiple services bind to the same host port in Docker Compose, causing stack failures.

Outcome

Doctor Compose eliminates port collision errors, automates secure defaults, cleans deprecated syntax, and provides exposure insights—all without sending data to a server, ensuring privacy and rapid stack deployment.

Workflow

• Paste raw docker-compose.yml into the Doctor Compose web interface.
• The client-side validator scans for host port collisions, insecure defaults, deprecated directives, and exposed ports.
• If a collision is detected, click the one‑click button to increment the host port automatically.
• Review suggested changes and apply them to the Compose file.
• Restart the stack with the updated configuration.
• Verify that the stack boots without port errors.
• Optionally, explore the exposed port surface to prevent accidental public exposure.
• Repeat the process for any new or modified Compose files.
• Share feedback on additional validation rules via comments.

Evidence

Doctor Compose runs entirely inside your browser: Parsing, linting, and patching happen locally using client‑side JavaScript.

Source