Update - docker file

Dockerfile

@@ -1,9 +1,12 @@
-FROM node:14-alpine
-WORKDIR /app
+FROM node:20-alpine3.19
+WORKDIR /usr/src/app
 COPY package*.json ./
 RUN npm install
+
 COPY . .
-ENV PORT=3001
-RUN npm run build
-EXPOSE 3001
-CMD ["npm", "start"]
+
+# Expose the port the app runs on
+EXPOSE 3002
+
+# Command to run your application
+CMD ["npm", "run", "start-diff-port"]

package.json

@@ -50,6 +50,7 @@
   },
   "scripts": {
     "start": "react-scripts start",
+    "start-diff-port": "PORT=3002 react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject"