fix:laravel-horizon (laradock#2181)

Author: Yuqi Hao

docker-compose.yml

@@ -245,6 +245,7 @@ services:
           - INSTALL_PGSQL=${PHP_FPM_INSTALL_PGSQL}
           - INSTALL_BCMATH=${PHP_FPM_INSTALL_BCMATH}
           - INSTALL_MEMCACHED=${PHP_FPM_INSTALL_MEMCACHED}
+          - INSTALL_AMQP=${PHP_FPM_INSTALL_AMQP}
       volumes:
         - ${APP_CODE_PATH_HOST}:${APP_CODE_PATH_CONTAINER}
         - ./laravel-horizon/supervisord.d:/etc/supervisord.d

laravel-horizon/Dockerfile

@@ -32,6 +32,12 @@ RUN if [ ${INSTALL_BCMATH} = true ]; then \
   docker-php-ext-install bcmath \
   ;fi
 
+#Install Sockets package:
+ARG INSTALL_AMQP=false
+RUN if [ ${INSTALL_AMQP} = true ]; then \
+  docker-php-ext-install sockets \
+  ;fi
+
 # Install PostgreSQL drivers:
 ARG INSTALL_PGSQL=false
 RUN if [ ${INSTALL_PGSQL} = true ]; then \