fix dockerfiles

backend/Dockerfile

@@ -4,7 +4,7 @@ FROM node:16
 
 WORKDIR /app
 
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm install
 
 COPY . .

frontend/Dockerfile

@@ -4,7 +4,7 @@ FROM node:16
 
 WORKDIR /app
 
-COPY package.json package-lock.json ./
+COPY package*.json ./
 RUN npm install
 
 COPY . .