diff --git a/lib/command.js b/lib/command.js
index 46fbbc3..65b96e6 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -1,13 +1,11 @@
-const EventEmitter = require('node:events');
-
 /**
  * Base class for Myt commands.
  */
-module.exports = class MytCommand extends EventEmitter {
+module.exports = class MytCommand{
     constructor(myt, opts) {
-        super();
         this.myt = myt;
         this.opts = opts;
+        this.handlers = {};
     }
 
     async cli(myt, opts) {
@@ -27,4 +25,13 @@ module.exports = class MytCommand extends EventEmitter {
     async run(myt, opts) {
         throw new Error('run command not defined');
     }
+
+    on(event, handler) {
+        this.handlers[event] = handler;
+    }
+
+    emit(event, ...args) {
+        const handler = this.handlers[event];
+        if (handler) handler (...args);
+    }
 }
diff --git a/myt-run.js b/myt-run.js
index 4a4bf82..3b6591e 100644
--- a/myt-run.js
+++ b/myt-run.js
@@ -87,7 +87,7 @@ class Run extends Command {
         this.emit('runningContainer');
 
         const isRandom = opts.random;
-        const dbConfig = Object.assign({}, opts.dbConfig);
+        const dbConfig = opts.dbConfig;
 
         let runOptions;
 
@@ -193,6 +193,7 @@ class Run extends Command {
             }
         }
 
+        await conn.end();
         return server;
     }
 }
diff --git a/myt.js b/myt.js
index 0f425b8..8bf24f5 100755
--- a/myt.js
+++ b/myt.js
@@ -165,6 +165,7 @@ class Myt {
     }
 
     async run(Command, opts) {
+        if (!opts) opts = this.opts;
         const command = new Command(this, opts);
         if (this.cliMode)
             return await command.cli(this, opts);