Docker Compose & Nginx Reverse Proxy Config Generator

Docker Compose & Nginx Reverse Proxy Config Generator — Production-Ready Starter Templates

The Docker Compose & Nginx Reverse Proxy Config Generator builds opinionated, production-friendly snippets for Node.js apps: a minimal Dockerfile, an Nginx reverse-proxy config, or a docker-compose.yml that wires Node and Nginx together. You provide the port, server name (for Nginx), and optional environment variables, and the tool outputs copy‑pasteable config you can use as a starting point.

Why use this tool?

• Faster setup: Skip searching docs or copying old gists; generate Docker, Nginx, or Compose in one place.
• Production‑oriented defaults: Uses Node 20 Alpine, a cache‑friendly Docker build, non‑root user, and proxy headers that preserve the real client IP.
• Docker‑aware Nginx: proxy_pass targets a configurable upstream service name instead of always pointing to 127.0.0.1, making it safer for multi‑container deployments.
• Easy to customize: Paste the result into your repo and adjust paths, commands, and environment variables as needed.

Key features

• Port input: Choose the application port (defaults to 3000).
• Output type selector:
  • Dockerfile (Node): FROM node:20-alpine, WORKDIR /app, COPY package*.json, RUN npm install, COPY . ., ENV NODE_ENV=production, EXPOSE, USER node, and a CMD that runs your app.
  • Nginx proxy config: Generates a server block that listens on port 80 and proxies traffic to http://<upstream>:<port>, with WebSocket headers and real‑IP forwarding.
  • docker-compose.yml (Node + Nginx): Defines an app service built from your Dockerfile and an nginx service using the generated config file.
• Server name: Set the server_name used by Nginx (for example example.com).
• Upstream host/service: Configure the upstream hostname or Docker service name (default app) for proxy_pass.
• Copy button: One‑click copy of the generated snippet into your clipboard.

How it works

The tool reads your selected output type (Docker, Nginx, or Compose) plus the port, server name, and upstream host. It then assembles a template line by line in the browser and writes the final string into the output textarea—no backend, file I/O, or external services involved. When you click Copy, the text is written to your clipboard so you can paste it directly into your project.

Example workflows

• Generate a Dockerfile for a Node app:
  1. Set Port to the internal port your app listens on (for example 3000).
  2. Choose Dockerfile (Node).
  3. Click Copy and save the contents as Dockerfile in your project root.
• Create an Nginx reverse proxy for a Dockerized app:
  1. Set Port to your app container port.
  2. Set Server name to your domain (for example myapp.com).
  3. Set Upstream host/service to your app container or service name (for example app).
  4. Choose Nginx proxy config, copy the output, and save it as nginx.conf on your server or in your image.
• Wire Node and Nginx together with docker-compose:
  1. Use the Dockerfile (Node) output as your Dockerfile.
  2. Generate an Nginx proxy config and save it as nginx.conf.
  3. Choose docker-compose.yml (Node + Nginx) and copy the output to docker-compose.yml.
  4. Run docker compose up -d to start both services.

Try the Docker Compose & Nginx Reverse Proxy Config Generator

Open the tool, pick your port and output type, and copy the generated snippet into your project. From there you can tweak commands, environment variables, and advanced Nginx options while keeping a solid, production‑oriented baseline.