Dockerfile Generator

Generate optimized Dockerfiles for Node.js, Python, Go, and more with best practices.

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Dockerfile

# Build stage
FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY . .
RUN npm run build

# Production stage
FROM node:20-alpine
WORKDIR /app
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
COPY --from=builder --chown=appuser:appgroup /app/dist ./dist
COPY --from=builder --chown=appuser:appgroup /app/node_modules ./node_modules
COPY --from=builder --chown=appuser:appgroup /app/package.json ./
USER appuser
EXPOSE 3000
CMD ["node", "dist/index.js"]

.dockerignore

node_modules
npm-debug.log
.env
dist
build
.git
.gitignore
Dockerfile
.dockerignore
coverage
.nyc_output

Docker Commands

docker build -t my-node-app .
docker run -p 3000:3000 my-node-app

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About Dockerfile Generator

Dockerfile Generator on TheToolss creates production-ready Dockerfiles with multi-stage builds, .dockerignore, and docker run commands.

How to use Dockerfile Generator

  1. Select your platform/language.
  2. Configure version and options.
  3. Copy the generated Dockerfile.

Key features

  • Node.js, Python, Go, Rust, Java, Nginx, Static
  • Multi-stage build support
  • Auto-generated .dockerignore
  • Docker run command
  • Production best practices

Frequently asked questions

What is a multi-stage build?
Multi-stage builds create smaller final images by separating build and runtime stages.