test(docker): more testing on how i want to build the docker part of the app

Dockerfile

@@ -1,29 +1,49 @@
-# Install dependencies
-FROM node:24-alpine AS deps
+# Stage 1: Build the Express.js app
+FROM node:24-alpine AS app-builder
 WORKDIR /app
 COPY package*.json ./
+COPY app ./app
 RUN npm install
+RUN npm run build:app
 
-# Build app
-FROM node:24-alpine AS builder
-WORKDIR /app
-COPY --from=deps /app/node_modules ./node_modules
-COPY . .
+#--------------------
+
+# Stage 2: Build the Docusaurus docs
+FROM node:24-alpine AS docs-builder
+WORKDIR /app/lstDocs
+COPY lstDocs/package*.json ./
+COPY --from=app-builder /app/node_modules /app/node_modules
+COPY lstDocs ./
+RUN npm install
 RUN npm run build
 
-# Production image
+#--------------------
+
+# Stage 3: Build the Vite frontend
+FROM node:24-alpine AS front-builder
+WORKDIR /app/frontend
+COPY frontend/package*.json ./
+COPY --from=app-builder /app/node_modules /app/node_modules
+COPY frontend ./
+RUN npm install
+RUN npm run build
+
+#--------------------
+
+# Stage 4: Create the final production image
 FROM node:24-alpine AS runner
 WORKDIR /app
+ENV NODE_ENV=production
+ENV RUNNING_IN_DOCKER=true
 
-# Install only prod deps
+# Copy production dependencies for the main app
 COPY package*.json ./
 RUN npm install --omit=dev --ignore-scripts
 
-# Copy compiled app
-COPY --from=builder /app/dist ./dist
+# Copy the built artifacts from each builder stage
+COPY --from=app-builder /app/dist ./dist
+COPY --from=docs-builder /app/lstDocs/build ./lstDocs/build
+COPY --from=front-builder /app/frontend/dist ./frontend/dist
 
 EXPOSE 4200
-ENV NODE_ENV=dev
-ENV RUNNING_IN_DOCKER=true
-
 CMD ["node", "dist/main.js"]