diff --git a/.env.example b/.env.example
index 789188b..7110a84 100644
--- a/.env.example
+++ b/.env.example
@@ -2,16 +2,16 @@
 PGDATABASE=socialflow
 PGUSER=socialflow
 PGPASSWORD=changeme
-PGPORT=5432
+PGPORT=4523
 PGHOST=postgres
 
 # URL de connexion complète (générée automatiquement dans Docker)
-DATABASE_URL=postgresql://socialflow:changeme@postgres:5432/socialflow
+DATABASE_URL=postgresql://socialflow:changeme@postgres:4523/socialflow
 
 # Configuration de l'application
-PORT=4523
+PORT=5555
 NODE_ENV=production
-APP_URL=http://localhost:4523
+APP_URL=http://localhost:5555
 
 # Clé secrète pour les sessions (CHANGEZ CETTE VALEUR)
 SESSION_SECRET=your-secret-key-change-me-to-random-string
diff --git a/DOCKER.md b/DOCKER.md
index bcb3291..e735565 100644
--- a/DOCKER.md
+++ b/DOCKER.md
@@ -45,10 +45,10 @@ docker-compose logs -f
 docker-compose down
 ```
 
-## 🌐 Accès à l'application
+## 🌐 Accès
 
-- **Accès direct** : http://localhost:4523
-- **Avec Nginx** (reverse proxy) : Voir section ci-dessous
+- **PostgreSQL** : Accessible sur le port **4523** (interne et externe)
+- **Application** : Accessible via Nginx sur le réseau `nginx_default`
 
 ## 🔧 Architecture réseau
 
@@ -60,6 +60,10 @@ docker-compose down
 - PostgreSQL et l'application sont sur ce réseau
 - Permet l'accès via Nginx et un domaine personnalisé
 
+### Ports exposés
+- **PostgreSQL** : `4523:4523` (port hôte 4523 → port container 4523)
+- **Application** : Port 5555 interne (non exposé sur l'hôte, accessible via Nginx)
+
 ## 📝 Configuration Nginx
 
 ### Prérequis : Créer le réseau nginx
@@ -72,11 +76,11 @@ docker network create nginx_default
 
 ### Configuration Nginx
 
-Mettez à jour votre configuration Nginx pour cibler le port **4523** :
+Configurez Nginx pour cibler l'application sur le port **5555** :
 
 ```nginx
 upstream socialflow {
-    server socialflow-app:4523;  # ← Utiliser le port 4523
+    server socialflow-app:5555;  # ← Port interne de l'application
 }
 
 server {
diff --git a/Dockerfile b/Dockerfile
index cb4ef01..40456fd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,12 +34,12 @@ RUN npm run build
 # Nettoyer les fichiers inutiles pour réduire la taille
 RUN rm -rf client node_modules/.cache
 
-# Exposer le port de l'application (défini par ENV PORT)
-EXPOSE 4523
+# Exposer le port de l'application
+EXPOSE 5555
 
 # Variables d'environnement par défaut
 ENV NODE_ENV=production
-ENV PORT=4523
+ENV PORT=5555
 
 # Démarrer l'application
 CMD ["npm", "run", "start"]
diff --git a/docker-compose.yml b/docker-compose.yml
index 88ecb63..43f9f5a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,19 +6,18 @@ services:
     image: postgres:16-alpine
     container_name: socialflow-db
     restart: unless-stopped
+    ports:
+      - "4523:4523"
     environment:
       POSTGRES_DB: ${PGDATABASE:-socialflow}
       POSTGRES_USER: ${PGUSER:-socialflow}
       POSTGRES_PASSWORD: ${PGPASSWORD:-changeme}
+      PGPORT: 4523
     volumes:
       - postgres_data:/var/lib/postgresql/data
     networks:
       - internal
       - nginx_default
-    # Port non exposé sur l'hôte pour plus de sécurité en production
-    # Décommentez la ligne suivante si vous avez besoin d'accéder à la DB localement
-    # ports:
-    #   - "${PGPORT:-5432}:5432"
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U ${PGUSER:-socialflow}"]
       interval: 10s
@@ -32,15 +31,13 @@ services:
       dockerfile: Dockerfile
     container_name: socialflow-app
     restart: unless-stopped
-    ports:
-      - "4523:4523"
     environment:
       NODE_ENV: production
-      PORT: 4523
-      DATABASE_URL: postgresql://${PGUSER:-socialflow}:${PGPASSWORD:-changeme}@postgres:5432/${PGDATABASE:-socialflow}
+      PORT: 5555
+      DATABASE_URL: postgresql://${PGUSER:-socialflow}:${PGPASSWORD:-changeme}@postgres:4523/${PGDATABASE:-socialflow}
       OPENROUTER_API_KEY: ${OPENROUTER_API_KEY}
       SESSION_SECRET: ${SESSION_SECRET:-your-secret-key-change-me}
-      APP_URL: ${APP_URL:-http://localhost:4523}
+      APP_URL: ${APP_URL:-http://localhost:5555}
     networks:
       - internal
       - nginx_default
diff --git a/replit.md b/replit.md
index 82f03e3..0e1d70e 100644
--- a/replit.md
+++ b/replit.md
@@ -11,7 +11,7 @@ Preferred communication style: Simple, everyday language.
 ## Recent Changes
 
 ### October 17, 2025
-- **Docker Deployment Configuration**: Configured Docker Compose for private server deployment with PostgreSQL and application on same network. Application exposed on port 4523:4523 as requested. PostgreSQL and app communicate via internal Docker network and are both on nginx_default external network for reverse proxy access. Updated Dockerfile to use port 4523. Created comprehensive DOCKER.md documentation with setup instructions, network architecture explanation, and troubleshooting guide.
+- **Docker Deployment Configuration**: Configured Docker Compose for private server deployment with PostgreSQL and application on same network. PostgreSQL exposed on port 4523:4523 for external access. Application runs on internal port 5555 (accessible via Nginx reverse proxy). Both PostgreSQL and app are on nginx_default external network and internal network for communication. Created comprehensive DOCKER.md documentation with setup instructions, network architecture explanation, and troubleshooting guide.
 
 ### October 14, 2025
 - **Publication History Error Display Fix**: Fixed bug where publication history incorrectly displayed persistent errors for posts that failed initially but succeeded on retry. Problem: When a post failed, the `error` field was populated, but when the post was successfully republished, only `publishedAt` and `externalPostId` were updated without clearing the `error` field. Solution: Modified `schedulerService.publishPost()` to set `error: null` when publication succeeds, ensuring error messages are cleared from the history view after successful republication.