diff --git a/docker/Dockerfile b/docker/Dockerfile
index 270f784..af963ff 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -13,12 +13,9 @@ RUN apt-get update > /dev/null && \
     unzip filegator_latest.zip && rm filegator_latest.zip && \
     chown -R www-data:www-data filegator/ && \
     chmod -R 775 filegator/ && \
-    # configure Apache
-    echo '\n\
-    <VirtualHost *:80> \n\
-       DocumentRoot /var/www/filegator/dist\n\
-    </VirtualHost>\n\
-    ' > /etc/apache2/sites-enabled/000-default.conf && \
+    # configure Apache to use the value of APACHE_DOCUMENT_ROOT as its default Document Root
+    sed -ri -e 's!/var/www/html!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/sites-available/*.conf && \
+    sed -ri -e 's!/var/www/!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf && \
     # configure php
     mv "$PHP_INI_DIR/php.ini-production" "$PHP_INI_DIR/php.ini" && \
     # cleanup apt