diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90a6660f..0d92bac0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Add `TZ` env var to change PHP `date.timezone` (#133)
 - Update to PHP 8.2 (#411)
 - Add back a `/sessions` volume for sessions persistence (#399)
+- Support adding custom configurations in `/etc/phpmyadmin/conf.d` (#401)
 
 ## [5.2.1] - 2023-02-08
 
diff --git a/README.md b/README.md
index 9b1b8efd..6aa0571e 100644
--- a/README.md
+++ b/README.md
@@ -136,6 +136,16 @@ See the following links for config file information:
 * https://docs.phpmyadmin.net/en/latest/config.html#config
 * https://docs.phpmyadmin.net/en/latest/setup.html
 
+## Adding custom configuration in `/etc/phpmyadmin/conf.d`
+
+you can also consider storing your custom configuration files in the folder `/etc/phpmyadmin/conf.d`, which is very suitable for managing multiple phpMyAdmin configuration files for different hosts,Then you can create `server-1.php`, `server-2.php`, or any file name you want, and store them in the conf.d directory mounted on the host.
+
+On the `docker run` line like this:
+
+```sh
+docker run --name phpmyadmin -d --link mysql_db_server:db -p 8080:80 -v /some/local/directory/conf.d:/etc/phpmyadmin/conf.d:ro phpmyadmin:latest
+```
+
 ## Usage behind a reverse proxy
 
 Set the variable ``PMA_ABSOLUTE_URI`` to the fully-qualified path (``https://pma.example.net/``) where the reverse proxy makes phpMyAdmin available.
diff --git a/apache/config.inc.php b/apache/config.inc.php
index 8055e5c9..9a391347 100644
--- a/apache/config.inc.php
+++ b/apache/config.inc.php
@@ -159,3 +159,10 @@
 if (file_exists('/etc/phpmyadmin/config.user.inc.php')) {
     include '/etc/phpmyadmin/config.user.inc.php';
 }
+
+/* Support additional configurations */
+if (is_dir('/etc/phpmyadmin/conf.d/')) {
+    foreach (glob('/etc/phpmyadmin/conf.d/*.php') as $filename) {
+        include $filename;
+    }
+}
diff --git a/config.inc.php b/config.inc.php
index 8055e5c9..9a391347 100644
--- a/config.inc.php
+++ b/config.inc.php
@@ -159,3 +159,10 @@
 if (file_exists('/etc/phpmyadmin/config.user.inc.php')) {
     include '/etc/phpmyadmin/config.user.inc.php';
 }
+
+/* Support additional configurations */
+if (is_dir('/etc/phpmyadmin/conf.d/')) {
+    foreach (glob('/etc/phpmyadmin/conf.d/*.php') as $filename) {
+        include $filename;
+    }
+}
diff --git a/fpm-alpine/config.inc.php b/fpm-alpine/config.inc.php
index 8055e5c9..9a391347 100644
--- a/fpm-alpine/config.inc.php
+++ b/fpm-alpine/config.inc.php
@@ -159,3 +159,10 @@
 if (file_exists('/etc/phpmyadmin/config.user.inc.php')) {
     include '/etc/phpmyadmin/config.user.inc.php';
 }
+
+/* Support additional configurations */
+if (is_dir('/etc/phpmyadmin/conf.d/')) {
+    foreach (glob('/etc/phpmyadmin/conf.d/*.php') as $filename) {
+        include $filename;
+    }
+}
diff --git a/fpm/config.inc.php b/fpm/config.inc.php
index 8055e5c9..9a391347 100644
--- a/fpm/config.inc.php
+++ b/fpm/config.inc.php
@@ -159,3 +159,10 @@
 if (file_exists('/etc/phpmyadmin/config.user.inc.php')) {
     include '/etc/phpmyadmin/config.user.inc.php';
 }
+
+/* Support additional configurations */
+if (is_dir('/etc/phpmyadmin/conf.d/')) {
+    foreach (glob('/etc/phpmyadmin/conf.d/*.php') as $filename) {
+        include $filename;
+    }
+}