Remove user/permission management for Dokploy deployment

- Dockerfile: remove appuser creation, run everything as root
- www.conf: switch php-fpm workers to www-data
- entrypoint.sh: remove all chown and git safe.directory workarounds
- docker-compose.yml: remove USER_ID/GROUP_ID build args
- .env.example: remove USER_ID/GROUP_ID variables

docker/php/Dockerfile

@@ -1,8 +1,5 @@
 FROM php:8.3-fpm
 
-ARG USER_ID=1000
-ARG GROUP_ID=1000
-
 # System dependencies
 RUN apt-get update && apt-get install -y \
     git \
@@ -42,26 +39,19 @@ RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-# Create system user
-RUN groupadd -g ${GROUP_ID} appuser \
-    && useradd -u ${USER_ID} -g appuser -m appuser
-
 # Set working directory
 WORKDIR /var/www/html
 
 # Copy PHP configuration
 COPY php.ini /usr/local/etc/php/conf.d/custom.ini
 
-# Copy PHP-FPM pool config (run workers as appuser)
+# Copy PHP-FPM pool config
 COPY www.conf /usr/local/etc/php-fpm.d/www.conf
 
 # Copy entrypoint
 COPY entrypoint.sh /usr/local/bin/entrypoint.sh
 RUN chmod +x /usr/local/bin/entrypoint.sh
 
-# Set ownership
-RUN chown -R appuser:appuser /var/www/html
-
 EXPOSE 9000
 
 ENTRYPOINT ["entrypoint.sh"]