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Dockerfile Generator — Free, No Upload, Browser-Based

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Dockerfile Generator builds a production-ready Dockerfile for Node.js, Python, Go, Java, Rust, PHP, Ruby, .NET, and static sites — entirely in your browser. Choose your runtime, toggle multi-stage builds, non-root user, and HEALTHCHECK support, then copy or download the result. Nothing is sent to a server; your configuration never leaves your device.

Jak używać tego narzędzia

  1. Select your language or runtime from the dropdown and adjust the version and port if needed.
  2. Toggle options — multi-stage build, non-root user, and HEALTHCHECK — to match your production requirements.
  3. Copy the generated Dockerfile to your clipboard or download it directly to your project folder.
Options
# ---- Build stage ----
FROM node:22-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci --omit=dev
COPY . .
RUN npm run build

# ---- Runtime stage ----
FROM node:22-alpine AS runner
ENV NODE_ENV=production
WORKDIR /app
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package.json ./
USER appuser
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD wget -qO- http://localhost:3000/health || exit 1
CMD ["node", "dist/index.js"]
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