What does this tool do?
The Docker Compose Generator builds a valid docker-compose.yml from a visual form, so you can define multiple services without hand-writing YAML. You enter the image, port mappings, environment variables, volumes and restart policy, and the tool produces correctly indented output. It's ideal for developers spinning up multi-container stacks such as an app plus a database and a cache.
How to use it
- Enter your configuration details.
- Review the generated output.
- Copy the ready-to-use code or file.
Scaffold a typical stack in minutes
The default template shows a classic setup: a node:20-alpine app, a postgres:16-alpine database, and a redis:7-alpine cache. For each service, enter the image tag, host:container port mappings like 3000:3000, and environment variables such as NODE_ENV=production, one per line. Use '+ Add service' to append a new block and × to remove one. Named volumes like pgdata:/var/lib/postgresql/data are automatically collected into a top-level volumes section.
Choose version and restart behavior
Pick the Compose file version: 3.9, 3.8, 3.7 or 3, with 3.8 being a safe default for most modern Docker Engines. Set a restart policy per service from no, always, unless-stopped or on-failure. Production services usually use unless-stopped, so a crashed container restarts automatically but stays down once you stop it manually. Copy the output and save it as docker-compose.yml in your project root, then run docker compose up.
Frequently asked questions
How should I format port mappings?
Use host:container, for example 8080:80. For multiple ports, put each on its own line; the tool turns them into a quoted ports list.
Are named volumes declared automatically?
Yes. When you enter a named volume in the form name:/path (not a bind mount starting with ./ or /), the tool detects it and adds it to the top-level volumes section at the end of the file.
Which Compose version should I pick?
3.8 or 3.9 works for current Docker Engines. Choose 3.7 or 3 if you need compatibility with older Swarm deployments.
Is Docker Compose Generator free?
Yes. Docker Compose Generator and all 300+ tools on MagmaNex are completely free with no signup or account required.
Is my data safe?
Yes. Everything runs locally in your browser. The data you enter is never sent to a server, stored, or shared.
Does it work on mobile?
Yes. Docker Compose Generator works on phones, tablets and desktops — no app download needed.
🔒 Privacy: everything runs in your browser, your data is never sent to a server.