Upload Dockerfile

Dockerfile

@@ -0,0 +1,62 @@
+# STAGE 1: Build the React frontend with a fresh and clean dependency install
+FROM node:18-bullseye AS builder
+
+WORKDIR /app
+
+# Copy ONLY the frontend's package.json file to force a fresh install
+COPY web/package.json ./
+
+# Run npm install (NOT ci) to create a new dependency tree from scratch.
+# This is the key step to fix a potentially corrupted lock file issue.
+RUN npm install
+
+# Copy the rest of the frontend's source code
+COPY web/ ./
+
+# Increase the memory available to the Node.js process for the build.
+ENV NODE_OPTIONS=--max-old-space-size=4096
+
+# Build the frontend. It will now have a clean and correct node_modules.
+RUN npm run build
+
+# STAGE 2: Create the final, lean production image
+FROM node:18-bullseye
+
+WORKDIR /app
+
+# Install System Dependencies required for the backend
+RUN apt-get update && apt-get install -y python3 python3-pip build-essential && rm -rf /var/lib/apt/lists/*
+
+# Copy only the necessary package manifests for the backend and root
+COPY package.json package-lock.json* ./
+COPY backend/package.json ./backend/
+COPY backend/python/requirements.txt ./backend/python/
+
+# Install only production dependencies for the backend and root using npm ci
+RUN npm ci --omit=dev
+
+# Install Python dependencies
+RUN pip3 install --no-cache-dir -r backend/python/requirements.txt
+
+# Create the backend directory and ensure it's owned by 'node' before copying contents
+RUN mkdir -p /app/backend && chown node:node /app/backend
+
+# Switch to the non-root 'node' user BEFORE copying backend source
+USER node
+
+# Copy backend source code as 'node' user
+COPY backend/ ./backend/
+
+# Pre-create the directories that the Node.js app needs to write to.
+# This ensures they exist with correct permissions before the app tries to create them.
+RUN mkdir -p /app/backend/uploads /app/backend/temp /app/backend/results
+
+# Copy the pre-built frontend from the builder stage
+COPY --from=builder /app/build ./web/build
+
+# --- Final Configuration ---
+ENV PORT=7860
+EXPOSE 7860
+
+# Define the command to start the production server
+CMD ["node", "backend/server.js"]