diff --git a/Dockerfile b/Dockerfile
index 1beebde..be47560 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,13 +25,18 @@ RUN apk add --no-cache php7-fpm \
        php7-dom \
        php7-iconv \
        php7-mbstring \
+       php7-openssl \
+       php7-session \
        php7-tokenizer \
        php7-zip \
        php7-pecl-zmq \
        php7-pecl-mongodb \
        supervisor \
        fcgi \
+    && cp docker/*-fpm.conf /etc/php7/php-fpm.d/ \
     && php bin/console cache:warmup \
     && crontab /var/www/html/docker/crontab
 
+EXPOSE 9000
+
 ENTRYPOINT ["supervisord", "--configuration", "/var/www/html/docker/supervisord.conf"]
diff --git a/docker/docker-fpm.conf b/docker/docker-fpm.conf
new file mode 100644
index 0000000..6791334
--- /dev/null
+++ b/docker/docker-fpm.conf
@@ -0,0 +1,11 @@
+[global]
+error_log = /proc/self/fd/2
+
+[www]
+; if we send this to /proc/self/fd/1, it never appears
+access.log = /proc/self/fd/2
+
+clear_env = no
+
+; Ensure worker stdout and stderr are sent to the main error log.
+catch_workers_output = yes
diff --git a/docker/supervisord.conf b/docker/supervisord.conf
index 58333a7..50a02aa 100644
--- a/docker/supervisord.conf
+++ b/docker/supervisord.conf
@@ -3,7 +3,7 @@ nodaemon=true
 user=root
 
 [program:php-fpm]
-command=php-fpm
+command=php-fpm7 -F
 stderr_logfile = /dev/stderr
 stderr_logfile_maxbytes=0
 stdout_logfile = /dev/stdout
diff --git a/docker/zz-docker-fpm.conf b/docker/zz-docker-fpm.conf
new file mode 100644
index 0000000..e0590d8
--- /dev/null
+++ b/docker/zz-docker-fpm.conf
@@ -0,0 +1,5 @@
+[global]
+daemonize = no
+
+[www]
+listen = 9000
diff --git a/src/Service/Board/ZMQ/ClientService.php b/src/Service/Board/ZMQ/ClientService.php
index cb6752c..5a9e9a9 100644
--- a/src/Service/Board/ZMQ/ClientService.php
+++ b/src/Service/Board/ZMQ/ClientService.php
@@ -70,6 +70,8 @@ public function send(string $message, Channel $channel): void
 
     public function __destruct()
     {
-        $this->socket->close();
+        if ($this->socket) {
+            $this->socket->close();
+        }
     }
 }