delete all root process

nginx/Dockerfile

@@ -121,4 +121,4 @@ LABEL description="nginx built from source." \
       openssl="LibreSSL ${LIBRESSL_VERSION}." \
       nginx="nginx ${NGINX_VERSION}."
 
-CMD ["/sbin/tini","--","run.sh"]
+CMD ["run.sh"]

nginx/run.sh

@@ -1,5 +1,4 @@
 #!/bin/sh
-touch /var/run/nginx.pid
 chown -R $UID:$GID /etc/nginx /var/log/nginx /var/run/nginx.pid /sites-enabled /conf.d /certs /www /tmp
 chmod -R 700 /certs
-su-exec $UID:$GID nginx
+exec su-exec $UID:$GID /sbin/tini -- nginx