adding devops

used gemini to create the k8s/dockerfiles faster

nodejs-mini-message-board/devops/Dockerfile

@@ -0,0 +1,20 @@
+# Use an official Node.js runtime as the base image
+FROM node:18-alpine
+
+# Set the working directory to /app inside the container
+WORKDIR /app
+
+# Copy package.json and package-lock.json to the working directory
+COPY package*.json ./
+
+# Install any needed dependencies using production command
+RUN npm install --production
+
+# Copy the rest of the application code to the working directory
+COPY . .
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# Define the command to run your app
+CMD [ "node", "src/app.js" ]