Toolcroft

Docker Compose Generator - Service Configuration Builder

Developer Tools

Build docker-compose.yml files visually. Add multiple services with images, ports, environment variables, volumes, depends_on, and restart policies, then copy the generated YAML.

Your inputs are saved in this browser only. No data is ever sent to a server, and saved values won't be visible in other browsers or devices.

Service 1

Ports (host:container)

Environment variables

Volumes

Depends on

docker-compose.yml
version: '3.9'

services:
  app:
    image: nginx:latest
    restart: unless-stopped

How to use this tool

  1. Click "Add Service" to define each container with its image, ports, and settings.
  2. Set environment variables and volume mounts as needed.
  3. Use depends_on to define startup order, then copy the generated YAML.

What is Docker Compose?

Docker Compose is a tool for defining and running multi-container Docker applications. You describe your services, networks, and volumes in a docker-compose.yml file, then start everything with a single command: docker compose up.

Key concepts

  • Service: a container defined by an image and configuration. Each service runs one container image (e.g., a web server, a database, a cache).
  • Image: the read-only template for the container, pulled from Docker Hub or a registry.
  • Volumes: persistent storage that outlives the container’s lifecycle. Mount a volume to keep database data between restarts.
  • Networks: Compose creates a default network so all services can communicate by service name (e.g., postgres or redis).
  • Ports: map a container port to a host port (hostPort:containerPort). Only expose ports you actually need.
  • Environment variables: pass configuration into containers. Prefer .env files for secrets rather than hardcoding them in the YAML.

Common commands

CommandDescription
docker compose up -dStart all services in detached (background) mode
docker compose downStop and remove containers and networks
docker compose logs -fFollow log output from all services
docker compose psList running services and their ports
docker compose pullPull latest images for all services
docker compose exec service bashOpen a shell inside a running service

Frequently asked questions

What Compose file format version is used?

This generator produces version 3.9 format, which is compatible with Docker Engine 19.03.0+ and Docker Compose v2.

What are named volumes?

Named volumes (e.g. pgdata:/var/lib/postgresql/data) are managed by Docker. They persist between container restarts and are listed in the top-level volumes: section.

Related tools

Browse all developer tools