FROM node:18-alpine

WORKDIR /app

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

# Install dependencies with verbose output for debugging
RUN echo "Installing dependencies..." && \
    npm install --production && \
    echo "Dependencies installed successfully" && \
    npm list --production && \
    npm cache clean --force

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

# Verify express was installed
RUN ls -la node_modules | grep express || echo "WARNING: express not found in node_modules"

EXPOSE 4001

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