Dockerfile to Compose Converter - Free Online IT Tool

🐳 Dockerfile to Compose Converter

Extract ports, env vars, and settings from a Dockerfile to create a Compose file.

ℹ️ About Dockerfile to Compose Converter

The Dockerfile to Compose Converter is a bridge tool between image building and service orchestration. A Dockerfile defines *how* an image is built, while a docker-compose.yml defines *how* that image is run in a specific environment.

This tool analyzes your Dockerfile instructions—specifically looking for EXPOSE ports, ENV variables, and WORKDIR settings—to scaffold a matching Compose service. It automatically sets the build context to the local directory (build: .), allowing you to move from image definition to a running service with minimal manual effort. This is perfect for setting up local development environments for new microservices.

📖 How to use Dockerfile to Compose Converter

1. Paste the contents of your <code>Dockerfile</code> into the input area.
2. Click 'Run Tool' to extract the configurations.
3. Review the generated Compose service block.
4. Add the output to your master <code>docker-compose.yml</code> file to integrate the new service into your stack.

❓ Frequently Asked Questions

What settings are extracted?

The tool prioritizes ports (EXPOSE), environment variables (ENV), and the base image (FROM).

Does it support multi-stage builds?

It currently parses the Dockerfile as a single unit. For multi-stage builds, it will use the information from the final stage, which is usually the one intended for the runtime environment.