🐳 Updated Dockerfile to use a builder step

Dockerfile

@@ -1,20 +1,37 @@
-FROM node:12-alpine
+# Use Node 21 as the base image for the builder stage
+FROM node:21-alpine AS builder
 LABEL maintainer="Rishi Ghan <rishi.ghan@gmail.com>"
 
-# Working directory
+# Set the working directory
 WORKDIR /metadata-service
-# Install dependencies
+
+# Copy and install dependencies
 COPY package.json package-lock.json ./
 RUN npm ci --silent
 
-# Copy source
+# Copy source code and build the application
 COPY . .
+RUN npm run build
 
-# Build and cleanup
+# Clean up development dependencies
+RUN npm prune --production
+
+# Final image using Node 21
+FROM node:21-alpine
+
+LABEL maintainer="Rishi Ghan <rishi.ghan@gmail.com>"
+
+# Set the working directory
+WORKDIR /metadata-service
+
+# Copy the necessary files from the builder image
+COPY --from=builder /metadata-service /metadata-service
+
+# Set environment variables
 ENV NODE_ENV=production
-RUN npm run build \
- && npm prune
 
+# Expose the application's port
 EXPOSE 3080
-# Start server
-CMD ["npm", "start"]
+
+# Start the application
+CMD ["npm", "start"]