Create Dockerfile

Dockerfile

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+# Use an official Node runtime as a parent image
+FROM node:20
+
+# Set the working directory in the container
+WORKDIR /usr/src/app
+
+# Copy package.json and package-lock.json (or npm-shrinkwrap.json) files
+COPY package*.json ./
+
+# Install any needed packages specified in package.json
+RUN npm install
+
+# Bundle the app's source code inside the Docker image
+COPY . .
+
+# Make port 3000 available to the world outside this container
+EXPOSE 3000
+
+# Define environment variable
+ENV NODE_ENV=production
+
+# Run the app when the container launches
+CMD ["node", "server.js"]