updated docker file

Dockerfile

@@ -1,2 +1,27 @@
-FROM nginx
-COPY . /usr/share/nginx/html
+# Official Node JS runtime as a parent image
+FROM node:20.0-alpine
+
+# Set the working directory to ./app
+WORKDIR /app
+
+# Install app dependencies
+# A wildcard is used to ensure both package.json AND package-lock.json are copied
+# where available (npm@5+)
+COPY package.json ./
+
+RUN apk add --no-cache git
+
+# Install any needed packages
+RUN npm install
+
+# Audit fix npm packages
+RUN npm audit fix
+
+# Bundle app source
+COPY . /app
+
+# Make port 3000 available to the world outside this container
+EXPOSE 3000
+
+# Run app.js when the container launches
+CMD ["npm", "start"]