fix the inline dockerfile to use cmd instead of run, and update port

docker-compose.yml

@@ -6,12 +6,12 @@ services:
         FROM node:20-alpine
         WORKDIR /usr/src/app
         COPY package*.json ./
-        RUN npm install
+        RUN npm install --include=dev
         COPY . .
-        EXPOSE 3000
-        RUN npm run start:dev
+        EXPOSE 4000
+        CMD ["npm", "run", "start:dev"]
     ports:
-      - "3000:3000"
+      - "4000:4000"
     env_file: .env
     depends_on:
       - redis