Dockerfile

# Stage 1: Base image with Node.js
FROM node:20 AS base

# Install required system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    python3 \
    python3-pip \
    build-essential \
    tesseract-ocr \
    tesseract-ocr-eng \
    tesseract-ocr-fra \
    tesseract-ocr-deu \
    tesseract-ocr-spa \
    ghostscript \
    unpaper \
    pngquant \
    qpdf \
    libleptonica-dev \
    liblept5 \
    libffi-dev \
    libsm6 \
    libxext6 \
    libxrender-dev \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Stage 2: Dependencies
FROM base AS deps
WORKDIR /app

# Copy package files
COPY package.json package-lock.json ./

# Install dependencies with legacy peer deps to handle compatibility issues
RUN npm install --legacy-peer-deps

# Stage 3: Builder
FROM deps AS builder
WORKDIR /app

# Copy source files
COPY . .

# Set environment for build
ENV NEXT_TELEMETRY_DISABLED=1
ENV NODE_ENV=production

# Build application with legacy peer deps
RUN npm run build

# Stage 4: Runner
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000

# Create app directory structure
RUN mkdir -p /app/processed /app/uploads /app/output /app/tmp \
    && chown -R node:node /app

# Copy built application
COPY --from=builder --chown=node:node /app/public ./public
COPY --from=builder --chown=node:node /app/.next ./.next
COPY --from=builder --chown=node:node /app/node_modules ./node_modules
COPY --from=builder --chown=node:node /app/package.json ./package.json
COPY --from=builder --chown=node:node /app/next.config.mjs ./next.config.mjs

# Set up volumes
VOLUME ["/app/processed", "/app/uploads", "/app/output"]

# Switch to non-root user
USER node

# Expose port
EXPOSE 3000

# Start the application
CMD ["npm", "start"]