Add Dockerfile

Dockerfile

@@ -1,14 +1,11 @@
-FROM node:20-slim
-
-# Set the working directory
+FROM node:20-slim as builder
 WORKDIR /usr/src/app
-
-# Copy package.json and install dependencies
-COPY package.json package-lock.json ./
+COPY package.json .
+RUN npm ci
 RUN npm install
 
-# Copy source files
+FROM node:20-slim
+WORKDIR /usr/src/app
+COPY --from=builder /usr/src/app/ /usr/src/app/
 COPY . .
-
-# Default command to run Eleventy
 CMD ["npx", "@11ty/eleventy", "--serve", "--port", "3000"]