Fix Docker entrypoint issues and improve containerization approach

Refactors the Dockerfile to use an inline script and addresses file permission issues for a more robust container build.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 4b008663-bd72-492b-b0b6-fa252367e730
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/4b008663-bd72-492b-b0b6-fa252367e730/jJHXzkQ

Dockerfile

@@ -61,12 +61,13 @@ COPY --from=builder --chown=regisflow:nodejs /build/dist/public ./public
 RUN npm cache clean --force && \
     rm -rf /tmp/*
 
-# Copier le script d'entrée directement dans /app (accessible)
-COPY docker-entrypoint.sh /app/docker-entrypoint.sh
-RUN chmod +x /app/docker-entrypoint.sh && \
-    chown regisflow:nodejs /app/docker-entrypoint.sh
+# Changer vers l'utilisateur non-root AVANT de copier le script
+USER regisflow
 
-# Changer vers l'utilisateur non-root
+# Copier le script d'entrée directement dans /app après changement d'utilisateur
+COPY --chown=regisflow:nodejs docker-entrypoint.sh /app/docker-entrypoint.sh
+USER root
+RUN chmod +x /app/docker-entrypoint.sh
 USER regisflow
 
 # Exposer le port