adding docker file

DockerFile

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+# Use the official Node.js image.
+# The version of Node.js can be adjusted as necessary.
+FROM node:14
+
+# Create and change to the app directory.
+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 . .
+
+# Expose the port the app runs on, if needed (for example, 8080).
+# EXPOSE 8080
+
+# Define environment variable for the path to .env file.
+ENV NODE_ENV=production
+
+# Command to run the application.
+CMD ["node", "index.js"]
+
+# Note: Replace 'index.js' with the actual entry point of your application.