Add Redis healthchecks and startup wait in PHP entrypoint

- Introduce Redis healthchecks in `docker-compose.prod.yml` for better container monitoring.
- Extend PHP Dockerfile with `redis-tools` and enable Composer dependency auto-install.
- Update `docker-entrypoint.sh` to wait for Redis readiness before starting PHP-FPM.
- Remove local Nginx override and simplify development setup.

services/php/Dockerfile

@@ -27,6 +27,7 @@ RUN set -eux; \
         unzip \
         git \
         curl \
+        redis-tools \
         libzip-dev \
         libssl-dev \
         ca-certificates \
@@ -62,11 +63,11 @@ ENV COMPOSER_ALLOW_SUPERUSER=1
 WORKDIR /var/www/html
 
 # Copy and enable entrypoint that installs Composer deps on first run
-#COPY services/php/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
-#RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+COPY services/php/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
 
 # Expose port 9000
 EXPOSE 9000
 
-#ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
 CMD ["php-fpm"]