Dockerfile Generator
// Generate Dockerfiles from configuration options
FROM node:20-alpine WORKDIR /app COPY package*.json . RUN npm ci --production COPY . . EXPOSE 3000 CMD ["node", "server.js"]
#About Dockerfile Generator
Free online Dockerfile generator. Create production-ready Dockerfiles by selecting a base image, exposed ports, working directory, and run commands. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
#FAQ
What is a Dockerfile? ▾
A Dockerfile is a text file containing instructions to build a Docker container image. It specifies the base image, copies application code, installs dependencies, and defines the command to run when the container starts.
How do I choose the right base image? ▾
Use slim or alpine variants for smaller images. For Node.js, use node:20-alpine. For Python, use python:3.12-slim. For Go, you can use a multi-stage build with golang for building and scratch or alpine for the final image.
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