manage supervisord with php

Dockerfile

@@ -21,6 +21,7 @@ RUN \
     php7-mbstring \
     php7-json \
     php7-fileinfo \
+    php7-pcntl \
     git \
     tar
 
@@ -39,7 +40,6 @@ COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY php-fpm.conf /etc/php7/php-fpm.d/ttrss.conf
 COPY install-db.php /var/lib/tt-rss-install/install-db.php
 COPY supervisor.conf /var/lib/tt-rss-install/supervisor.conf
-COPY manage-supervisord.py /var/lib/tt-rss-install/manage-supervisord.py
 COPY config.php /var/lib/tt-rss/config.php
 
 RUN \