Update default application port to 5555

Change the default exposed port and environment variable PORT from 5000 to 5555 in Dockerfile and docker-compose.yml.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/p0c5kxJ

Dockerfile

@@ -40,12 +40,12 @@ COPY --from=builder /app/shared ./shared
 COPY --from=builder /app/drizzle.config.ts ./
 COPY --from=builder /app/drizzle ./drizzle
 
-# Exposer le port 5000
-EXPOSE 5000
+# Exposer le port 5555
+EXPOSE 5555
 
 # Variables d'environnement par défaut
 ENV NODE_ENV=production
-ENV PORT=5000
+ENV PORT=5555
 
 # Démarrer l'application
 CMD ["npm", "run", "start"]