ci(docker): updated docker to correctly build and run

Dockerfile

@@ -1,49 +1,38 @@
-# Stage 1: Build the Express.js app
-FROM node:24-alpine AS app-builder
+FROM node:24-alpine AS deps
 WORKDIR /app
 COPY package*.json ./
-COPY app ./app
+
+RUN mkdir frontend
+RUN mkdir lstDocs
+COPY frontend/package*.json ./frontend
+COPY lstDocs/package*.json ./lstDocs
+
 RUN npm install
-RUN npm run build:app
+RUN npm run install:front
+RUN npm run install:docs
 
-#--------------------
-
-# 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
-
-#--------------------
-
-# 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
+# Build the Next.js app
+FROM node:24-alpine AS builder
 WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/frontend/node_modules ./frontend/node_modules
+COPY --from=deps /app/lstDocs/node_modules ./lstDocs/node_modules
+COPY . ./
+RUN npm run build:app
+RUN npm run build:front
+RUN npm run build:docs
+
+# Final stage
+FROM node:24-alpine
+WORKDIR /app
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/frontend/dist ./frontend/dist
+COPY --from=builder /app/lstDocs/build ./lstDocs/build
+
+
+
 ENV NODE_ENV=production
 ENV RUNNING_IN_DOCKER=true
-
-# Copy production dependencies for the main app
-COPY package*.json ./
-RUN npm install --omit=dev --ignore-scripts
-
-# 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
 CMD ["node", "dist/main.js"]