simple node app to test

Dockerfile

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+# Stage 1: Install production dependencies
+FROM node:18-alpine AS deps
+WORKDIR /usr/src/app
+COPY package*.json ./
+# Install only production dependencies
+RUN npm install --omit=dev
+
+# Stage 2: Final runtime image
+FROM node:18-alpine AS runner
+WORKDIR /usr/src/app
+
+# Copy production dependencies from the 'deps' stage
+COPY --from=deps /usr/src/app/node_modules ./node_modules
+# Copy the application source code
+COPY . .
+
+# Set environment to production
+ENV NODE_ENV=production
+
+# Expose the application port
+EXPOSE 3000
+
+# Start the application
+CMD ["node", "index.js"]