adding docker deployment

Dockerfile

@@ -0,0 +1,23 @@
+# Use an official Node runtime as the base image
+FROM node:18
+
+# Set the working directory in the container
+WORKDIR /usr/src/app
+
+# Copy package.json and package-lock.json
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy the rest of the application code
+COPY . .
+
+# Build the application
+RUN npm run build-prod
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# Define the command to run the app
+CMD [ "node", "dist/server/server.js" ]