Fixed copy commands

In a Dockerfile, when using COPY with more than one source file, the destination must be a directory and end with a /. Or, you can specify each file that needs to be copied.

Dockerfile

@@ -1,8 +1,10 @@
 FROM node:18-alpine
 WORKDIR /app
 
-COPY package*.json .
+COPY package.json .
+COPY package-lock.json .
+
 RUN npm ci
 
 COPY . .
-CMD ["node", "index.js"]
+CMD ["node", "index.js"]