fix: explicit package.json copy in Dockerfile

Dockerfile

@@ -4,7 +4,7 @@ FROM node:20-alpine AS builder
 WORKDIR /app
 
 # Copy package files and install all dependencies (including devDependencies for TypeScript)
-COPY package*.json ./
+COPY package.json ./
 RUN npm install
 
 # Copy source code and build
@@ -17,7 +17,7 @@ FROM node:20-alpine
 WORKDIR /app
 
 # Copy package files and install ONLY production dependencies
-COPY package*.json ./
+COPY package.json ./
 RUN npm install --omit=dev
 
 # Copy built code from the builder stage