Generate production-ready Dockerfiles with a visual builder. Select your base image, configure dependencies, and toggle best practices like multi-stage builds, non-root users, and healthchecks.
FROM node:20-alpine WORKDIR /app # Copy dependency files COPY package*.json ./ # Install dependencies RUN npm ci --only=production # Copy source code COPY . . # Build application RUN npm run build # Create non-root user RUN addgroup -g 1001 -S appuser && adduser -S appuser -u 1001 -G appuser USER appuser # Environment variables ENV NODE_ENV=production EXPOSE 3000 CMD ["node", "dist/index.js"]
A Dockerfile is a text file containing instructions to build a Docker container image. Writing Dockerfiles with best practices — like layer caching, multi-stage builds, and running as non-root — requires experience and attention to detail.
This generator creates production-ready Dockerfiles with presets for popular languages (Node.js, Python, Go, Rust, Java, Ruby, PHP). It applies best practices automatically: dependency caching, non-root user creation, multi-stage builds, and healthchecks. All generation happens locally in your browser.