Added Dockerfile

Dockerfile

@@ -0,0 +1,19 @@
+FROM node:22-alpine AS builder
+WORKDIR /app
+COPY package.json ./
+COPY package-lock.json ./
+RUN npm install
+COPY . ./
+RUN npm run build
+RUN npm prune --production
+
+
+FROM node:22-alpine
+USER node:node
+WORKDIR /app
+COPY --from=builder --chown=node:node /app/build build/
+COPY --from=builder --chown=node:node /app/node_modules node_modules/
+COPY package.json .
+EXPOSE 3000
+ENV NODE_ENV=production
+CMD [ "node", "build" ]