Upgrade Node.js version in Dockerfile

Updated base image to node:20-alpine and added CMD instruction.

Author: lakafior

Dockerfile

@@ -1,10 +1,11 @@
-FROM node:lts-alpine AS build
+FROM node:20-alpine AS build
 WORKDIR /app
 COPY package.json server.js ./
 RUN npm install && npm run build
 
-FROM node:lts-alpine
+FROM node:20-alpine
 WORKDIR /app
 COPY --from=build /app/dist/server.js ./
 EXPOSE 3000
-CMD ["node", "server.js"]
+
+CMD ["node", "server.js"]