diff --git a/src/Dockerfile b/src/Dockerfile
index 3a4e27b7aeea268acd8b5bbf3b97ce2cf9cbb5ac..e7cae7e483aac90144143b8bdf581122239cc05b 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -1,5 +1,4 @@
-from adminer:4.7.1
+from adminer:4.7.2
 USER root:root
 COPY account-nolock-plugin.php /var/www/html/plugins/
-COPY plugin.php /var/www/html/plugins/
 USER adminer:adminer
diff --git a/src/plugin.php b/src/plugin.php
deleted file mode 100644
index 34f315ff11c07259534d6c0e3c88bcb995950476..0000000000000000000000000000000000000000
--- a/src/plugin.php
+++ /dev/null
@@ -1,403 +0,0 @@
-<?php
-
-/** Adminer customization allowing usage of plugins
-* @link https://www.adminer.org/plugins/#use
-* @author Jakub Vrana, https://www.vrana.cz/
-* @license https://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
-* @license https://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
-*/
-class AdminerPlugin extends Adminer {
-	/** @access protected */
-	var $plugins;
-
-	function _findRootClass($class) { // is_subclass_of(string, string) is available since PHP 5.0.3
-		do {
-			$return = $class;
-		} while ($class = get_parent_class($class));
-		return $return;
-	}
-
-	/** Register plugins
-	* @param array object instances or null to register all classes starting by 'Adminer'
-	*/
-	function __construct($plugins) {
-		if ($plugins === null) {
-			$plugins = array();
-			foreach (get_declared_classes() as $class) {
-				if (preg_match('~^Adminer.~i', $class) && strcasecmp($this->_findRootClass($class), 'Adminer')) { //! can use interface
-					$plugins[$class] = new $class;
-				}
-			}
-		}
-		$this->plugins = $plugins;
-		//! it is possible to use ReflectionObject to find out which plugins defines which methods at once
-	}
-
-	function _callParent($function, $args) {
-		return call_user_func_array(array('parent', $function), $args);
-	}
-
-	function _applyPlugin($function, $args) {
-		foreach ($this->plugins as $plugin) {
-			if (method_exists($plugin, $function)) {
-				switch (count($args)) { // call_user_func_array() doesn't work well with references
-					case 0: $return = $plugin->$function(); break;
-					case 1: $return = $plugin->$function($args[0]); break;
-					case 2: $return = $plugin->$function($args[0], $args[1]); break;
-					case 3: $return = $plugin->$function($args[0], $args[1], $args[2]); break;
-					case 4: $return = $plugin->$function($args[0], $args[1], $args[2], $args[3]); break;
-					case 5: $return = $plugin->$function($args[0], $args[1], $args[2], $args[3], $args[4]); break;
-					case 6: $return = $plugin->$function($args[0], $args[1], $args[2], $args[3], $args[4], $args[5]); break;
-					default: trigger_error('Too many parameters.', E_USER_WARNING);
-				}
-				if ($return !== null) {
-					return $return;
-				}
-			}
-		}
-		return $this->_callParent($function, $args);
-	}
-
-	function _appendPlugin($function, $args) {
-		$return = $this->_callParent($function, $args);
-		foreach ($this->plugins as $plugin) {
-			if (method_exists($plugin, $function)) {
-				$value = call_user_func_array(array($plugin, $function), $args);
-				if ($value) {
-					$return += $value;
-				}
-			}
-		}
-		return $return;
-	}
-
-	// appendPlugin
-
-	function dumpFormat() {
-		$args = func_get_args();
-		return $this->_appendPlugin(__FUNCTION__, $args);
-	}
-
-	function dumpOutput() {
-		$args = func_get_args();
-		return $this->_appendPlugin(__FUNCTION__, $args);
-	}
-
-	function editFunctions($field) {
-		$args = func_get_args();
-		return $this->_appendPlugin(__FUNCTION__, $args);
-	}
-
-	// applyPlugin
-
-function bruteForceKey() {
-	$args = func_get_args();
-	return $this->_applyPlugin(__FUNCTION__, $args);
-}
-
-	function name() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function credentials() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function connectSsl() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function permanentLogin($create = false) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function serverName($server) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function database() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function schemas() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function databases($flush = true) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function queryTimeout() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function headers() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function csp() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function head() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function css() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function loginForm() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function loginFormField($name, $heading, $value) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function login($login, $password) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function tableName($tableStatus) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function fieldName($field, $order = 0) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectLinks($tableStatus, $set = "") {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function foreignKeys($table) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function backwardKeys($table, $tableName) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function backwardKeysPrint($backwardKeys, $row) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectQuery($query, $start, $failed = false) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function sqlCommandQuery($query) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function rowDescription($table) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function rowDescriptions($rows, $foreignKeys) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectLink($val, $field) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectVal($val, $link, $field, $original) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function editVal($val, $field) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function tableStructurePrint($fields) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function tableIndexesPrint($indexes) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectColumnsPrint($select, $columns) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectSearchPrint($where, $columns, $indexes) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectOrderPrint($order, $columns, $indexes) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectLimitPrint($limit) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectLengthPrint($text_length) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectActionPrint($indexes) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectCommandPrint() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectImportPrint() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectEmailPrint($emailFields, $columns) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectColumnsProcess($columns, $indexes) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectSearchProcess($fields, $indexes) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectOrderProcess($fields, $indexes) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectLimitProcess() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectLengthProcess() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectEmailProcess($where, $foreignKeys) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function selectQueryBuild($select, $where, $group, $order, $limit, $page) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function messageQuery($query, $time, $failed = false) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function editInput($table, $field, $attrs, $value) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function editHint($table, $field, $value) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function processInput($field, $value, $function = "") {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function dumpDatabase($db) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function dumpTable($table, $style, $is_view = 0) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function dumpData($table, $style, $query) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function dumpFilename($identifier) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function dumpHeaders($identifier, $multi_table = false) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function importServerPath() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function homepage() {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function navigation($missing) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function databasesPrint($missing) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-	function tablesPrint($tables) {
-		$args = func_get_args();
-		return $this->_applyPlugin(__FUNCTION__, $args);
-	}
-
-}