Implement multi-stage build in Dockerfile

Dockerfile

@@ -1,18 +1,32 @@
-FROM registry.access.redhat.com/ubi9/nodejs-18-minimal
+FROM registry.access.redhat.com/ubi9/nodejs-18-minimal AS build
 
 ENV TZ="Europe/Helsinki"
 
 WORKDIR /opt/app-root/src
 
-# Setup
-COPY package* ./
+COPY package*.json ./
 COPY tsconfig.json ./
-RUN npm ci -f --omit-dev --ignore-scripts
+
+RUN npm ci
+
 COPY src ./src
 
-# Build
 RUN npm run build
 
+
+FROM registry.access.redhat.com/ubi9/nodejs-18-minimal
+
+ENV TZ="Europe/Helsinki"
+
+ENV NODE_ENV=production
+
+WORKDIR /opt/app-root/src
+
+COPY --from=build /opt/app-root/src/package*.json ./
+COPY --from=build /opt/app-root/src/build ./build
+
+RUN npm ci
+
 EXPOSE 3003
 
-CMD ["npm", "run", "start:prod"]
+CMD ["node", "build/index.js"]