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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.

Slik bruker du dette verktøyet

  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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