Converter
Paste a `docker run` command, review the mapped Compose output, and copy a cleaner YAML version that is easier to store, share, and maintain.
Sample commands
Start from a realistic container example if you want to see how common Docker flags map into Compose.
Stronger converters keep the raw command editable so you can quickly fix flags or test another variant without leaving the page.
Service
my_app
Image
nginx:alpine
Mapped items
2 ports, 1 volumes, and 2 environment values.
Compose output
Better tools keep the output easy to verify, especially around quoted ports, env mapping, and external networks.
version: "3.8"
services:
my_app:
image: nginx:alpine
restart: always
ports:
- "8080:80"
- "443:443"
volumes:
- "/var/run/docker.sock:/tmp/docker.sock:ro"
environment:
- "NODE_ENV=production"
- "DB_PASS=secret123"
networks:
- webnet
networks:
webnet:
external: true
How to Use This Docker Run To Compose Converter
Paste the original Docker command, confirm the key mappings, then copy the Compose output once the service details, ports, volumes, and environment values look right.
Paste the full docker run command
Start from the command you already use locally or copied from documentation, including ports, volumes, env vars, restart policy, and network flags.
Review the detected service details
Check the inferred service name, image, and mapped counts first so you can catch a bad parse early.
Inspect the generated Compose YAML
Make sure ports, environment values, volumes, and networks land where you expect before you drop the file into a project.
Copy and save the YAML
Take the output into a `docker-compose.yml` or Compose file and keep refining it there for long-term maintenance.
When This Tool Is Most Useful
It helps most when you already have a container command that works and want to turn it into something cleaner than shell history, especially before sharing it with a team.
Turning one-off commands into maintainable config
Move away from long terminal commands when you want something easier to reuse, share, and review with the rest of the team.
Version-controlled container setup
Generate a Compose starting point that can live in Git instead of staying trapped in shell history or scattered docs.
Learning how flags map into Compose
Use the converter as a practical learning bridge when you know `docker run` better than Compose syntax.
Refactoring old container instructions
Take older run commands from tutorials, runbooks, or ticket notes and translate them into a cleaner project setup.
FAQs
What kinds of flags does this handle well?+
It handles common flags like ports, volumes, environment variables, env files, restart policies, network names, working directory, hostname, user, entrypoint, and labels.Will every docker run command convert perfectly?+
No. Some Docker flags need manual review or richer Compose structure, so the converter is best used as a strong starting point rather than a final production guarantee.Why keep ports quoted in Compose output?+
Quoted port mappings reduce YAML parsing surprises and make the output safer to paste into real Compose files.What is this most useful for?+
It is most useful for moving from ad hoc container commands to readable, repeatable Compose configuration.