feat: Docker Compose avec Node.js pré-compilé pour déploiement sans npm

Dockerfile

@@ -2,17 +2,11 @@ FROM node:18-alpine
 
 WORKDIR /app
 
-# Copy npm config
-COPY .npmrc ./
-
 # Copy package files
 COPY backend/package*.json ./
 
-# Install dependencies - handle npm bug with explicit install
-RUN npm cache clean --force && \
-    npm install --no-optional --legacy-peer-deps || true && \
-    npm install express express-session bcryptjs dotenv cors multer fs-extra && \
-    test -d node_modules/express || (ls -la node_modules/ && echo "FATAL: express not found" && exit 1)
+# Copy pre-built node_modules (already present)
+COPY backend/node_modules ./node_modules/
 
 # Copy application code
 COPY backend/src ./src