Support container 2.0

Author: dantleech

composer.json

@@ -14,7 +14,7 @@
     },
     "require": {
         "php": "^7.3||^8.0",
-        "psr/container": "^1.0",
+        "psr/container": "^1.0||^2.0",
         "psr/event-dispatcher": "^1.0"
     },
     "require-dev": {