diff --git a/Dockerfile b/Dockerfile
index 3c7c698..660e6f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ RUN apt-get update && apt-get -y install apache2
 ENV TZ=Europe/Paris
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 COPY apache2.conf /etc/apache2/
+COPY ports.conf /etc/apache2/
 RUN a2enmod proxy_fcgi
 COPY fpm.conf /etc/apache2/sites-available/
 RUN a2ensite fpm.conf
diff --git a/fpm.conf b/fpm.conf
index f9e4fc2..6dce0f1 100644
--- a/fpm.conf
+++ b/fpm.conf
@@ -1,4 +1,4 @@
-<VirtualHost *:80>
+<VirtualHost *:${APACHE_HTTP_PORT}>
     ServerName ${SERVER_NAME}
 
     <FilesMatch "\.php$">
diff --git a/ports.conf b/ports.conf
new file mode 100644
index 0000000..504214a
--- /dev/null
+++ b/ports.conf
@@ -0,0 +1,15 @@
+# If you just change the port or add more ports here, you will likely also
+# have to change the VirtualHost statement in
+# /etc/apache2/sites-enabled/000-default.conf
+
+Listen ${APACHE_HTTP_PORT}
+
+<IfModule ssl_module>
+        Listen ${APACHE_HTTPS_PORT}
+</IfModule>
+
+<IfModule mod_gnutls.c>
+        Listen ${APACHE_HTTPS_PORT}
+</IfModule>
+
+# vim: syntax=apache ts=4 sw=4 sts=4 sr noet