Add Dockerfile and README.md

Author: NEELOFARKHAN22

dockerfile

@@ -0,0 +1,21 @@
+# Use an official Node.js base image
+FROM node:14
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Copy the application code into the container
+COPY . /app
+
+# Install dependencies
+RUN npm install
+
+# Expose port 3000
+EXPOSE 3000
+
+# Use a non-root user to run the application
+USER node
+
+# Command to start the application
+CMD ["npm", "start"]
+