Clean up project by removing unnecessary files and configurations

Removes obsolete deployment guides, scripts, nginx configs, and simplifies the Docker setup, favoring a single docker-compose.yml.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 91318273-c764-4fd4-be04-bdc12c38af32
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/99451107-d8a0-4f61-81e0-cae481285260.jpg

Dockerfile

@@ -55,7 +55,6 @@ RUN npm cache clean --force && \
 
 # Copier les scripts de configuration
 COPY --chown=regisflow:nodejs docker-entrypoint-simple.sh /usr/local/bin/docker-entrypoint.sh
-COPY --chown=regisflow:nodejs postgres-prod.conf ./
 RUN chmod +x /usr/local/bin/docker-entrypoint.sh
 
 # Changer vers l'utilisateur non-root