Introduced new HTTP_INDEX_FILE variable to control index page

Dockerfiles/web-apache-mysql/ubuntu/conf/etc/zabbix/apache.conf

@@ -1,7 +1,7 @@
 <VirtualHost *:8080>
     DocumentRoot /usr/share/zabbix/
     ServerName zabbix
-    DirectoryIndex index.php
+    DirectoryIndex {HTTP_INDEX_FILE}
     AddType application/x-httpd-php .php .php3 .php4 .php5 .phtml
     AddType application/x-httpd-php-source .phps
 

Dockerfiles/web-apache-mysql/ubuntu/conf/etc/zabbix/apache_ssl.conf

@@ -6,7 +6,7 @@ LoadModule headers_module /usr/lib/apache2/modules/mod_headers.so
     <VirtualHost *:8443>
         DocumentRoot /usr/share/zabbix/
         ServerName zabbix
-        DirectoryIndex index.php
+        DirectoryIndex {HTTP_INDEX_FILE}
 
         AddType application/x-httpd-php .php .php3 .php4 .php5 .phtml
         AddType application/x-httpd-php-source .phps

Dockerfiles/web-apache-mysql/ubuntu/docker-entrypoint.sh

@@ -210,6 +210,17 @@ prepare_zbx_web_config() {
         rm -f "/tmp/defines.inc.php_tmp"
     fi
 
+    : ${HTTP_INDEX_FILE:="index.php"}
+    sed -i \
+        -e "s/{HTTP_INDEX_FILE}/${HTTP_INDEX_FILE}/g" \
+    "$ZABBIX_ETC_DIR/apache.conf"
+
+    if [ -f "$ZABBIX_ETC_DIR/apache_ssl.conf" ]; then
+        sed -i \
+            -e "s/{HTTP_INDEX_FILE}/${HTTP_INDEX_FILE}/g" \
+        "$ZABBIX_ETC_DIR/apache_ssl.conff"
+    fi
+
     : ${ENABLE_WEB_ACCESS_LOG:="true"}
 
     if [ "${ENABLE_WEB_ACCESS_LOG,,}" == "false" ]; then