chore: update dependencies and add .dockerignore file

- Updated MUI packages to version 5.x and x-charts/x-date-pickers to 7.x
- Downgraded React and React-DOM to version 18.3.1
- Added .dockerignore to exclude unnecessary files from Docker context

dockerfile

@@ -1,48 +1,89 @@
-# Dockerfile for Next.js 14 - Optimized for Production
+# =============================================================================
+# Multi-stage Dockerfile for Next.js 15 - Production Optimized
+# =============================================================================
+# Stage 1: Dependencies - Install all dependencies
+# Stage 2: Builder - Build the application
+# Stage 3: Runner - Production runtime
+# =============================================================================
 
-# Use the official Node.js image with Alpine Linux for a smaller footprint
-FROM node:22-alpine AS base
+# -----------------------------------------------------------------------------
+# Stage 1: Dependencies
+# -----------------------------------------------------------------------------
+FROM node:22-alpine AS deps
+
+# Install system dependencies for node-gyp
+RUN apk add --no-cache libc6-compat
 
-# Set the working directory in the container
 WORKDIR /app
 
-# Copy package.json and package-lock.json (or yarn.lock)
-COPY package*.json ./
+# Copy dependency files
+COPY package.json package-lock.json* ./
 
-# Install dependencies - leveraging Docker cache
-RUN npm i --force 
+# Install dependencies
+# Use npm ci for reproducible builds
+RUN npm ci --legacy-peer-deps || npm install --legacy-peer-deps
 
-# Copy the rest of the application code
+# -----------------------------------------------------------------------------
+# Stage 2: Builder
+# -----------------------------------------------------------------------------
+FROM node:22-alpine AS builder
+
+WORKDIR /app
+
+# Copy dependencies from deps stage
+COPY --from=deps /app/node_modules ./node_modules
+
+# Copy source code
 COPY . .
 
-# Build the Next.js application
+# Set build-time environment variables
+ENV NEXT_TELEMETRY_DISABLED=1
+ENV NODE_ENV=production
+
+# Build application
 RUN npm run build
 
-# Stage 2: Production image - smaller and leaner
+# -----------------------------------------------------------------------------
+# Stage 3: Runner (Production)
+# -----------------------------------------------------------------------------
 FROM node:22-alpine AS runner
 
-# Set the working directory
+# Install runtime dependencies
+RUN apk add --no-cache \
+    libc6-compat \
+    dumb-init
+
 WORKDIR /app
 
-# Set environment variables
-ENV NODE_ENV $NODE_ENV
-ENV NEXT_TELEMETRY_DISABLED 1 
+# Set production environment
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
 
-# Add a non-root user for security
-RUN addgroup -g 1001 -S nodejs
-RUN adduser -S nextjs -u 1001
+# Create non-root user for security
+RUN addgroup --system --gid 1001 nodejs && \
+    adduser --system --uid 1001 nextjs
 
-# Copy only the necessary files from the builder stage
-COPY --from=base /app/next.config.js ./
-COPY --from=base /app/public ./public
-COPY --from=base --chown=nextjs:nodejs /app/.next/standalone ./
-COPY --from=base --chown=nextjs:nodejs /app/.next/static ./.next/static
+# Copy necessary files from builder
+COPY --from=builder --chown=nextjs:nodejs /app/next.config.js ./
+COPY --from=builder --chown=nextjs:nodejs /app/public ./public
+COPY --from=builder --chown=nextjs:nodejs /app/.next ./.next
+COPY --from=builder --chown=nextjs:nodejs /app/package.json ./
+COPY --from=builder --chown=nextjs:nodejs /app/node_modules ./node_modules
 
-# Change ownership of all copied files to the non-root user
+# Switch to non-root user
 USER nextjs
 
-# Expose the port Next.js listens on
+# Expose port
 EXPOSE 3000
 
-# Command to start the Next.js server in production mode
-CMD ["node", "server.js"]
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+    CMD node -e "require('http').get('http://localhost:3000/', (res) => { process.exit(res.statusCode === 200 ? 0 : 1); }).on('error', () => { process.exit(1); });"
+
+# Use dumb-init to handle signals properly
+ENTRYPOINT ["dumb-init", "--"]
+
+# Start Next.js in production mode
+CMD ["node_modules/.bin/next", "start"]