fix: include package-lock.json for CI caching

Author: Mishra-coder

.gitignore

@@ -1,4 +1,3 @@
 node_modules/
-package-lock.json
 .env
 .DS_Store

backend/Dockerfile

@@ -1,28 +1,19 @@
-# Use official Node.js runtime as the base image
 FROM node:18-alpine as build
 
-# Set working directory inside the container
 WORKDIR /app
 
-# Copy package.json and package-lock.json
 COPY package*.json ./
 
-# Install dependencies
 RUN npm ci
 
-# Copy the rest of the application code
 COPY . .
 
-# Final Stage: Lean production image
 FROM node:18-alpine
 
 WORKDIR /app
 
-# Copy only relevant files from build stage
 COPY --from=build /app .
 
-# Expose the application port
 EXPOSE 5001
 
-# Start the application
 CMD ["npm", "start"]