FROM node:18-alpine

WORKDIR /app

# Copy package files
COPY backend/package*.json ./

# Install dependencies - bypass npm bugs
RUN npm ci --omit=dev || npm install --omit=dev || true && \
    npm install --save express express-session bcryptjs dotenv cors multer fs-extra && \
    if [ ! -d node_modules/express ]; then echo "ERROR: express not installed" && exit 1; fi

# Copy application code
COPY backend/src ./src
COPY frontend ./frontend

EXPOSE 4001

CMD ["node", "src/server.js"]