diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index ae1b780..0000000
--- a/Dockerfile
+++ /dev/null
@@ -1,11 +0,0 @@
-FROM php:8.0-cli-buster
-RUN apt-get update && \
-    apt-get install -y unzip fd-find entr
-
-RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
-
-COPY . /app
-WORKDIR /app
-RUN composer install
-
-CMD php vendor/bin/codecept run unit
diff --git a/_/DataModel/Type/Json.php b/_/DataModel/Type/Json.php
index 5b6b175..db574b5 100644
--- a/_/DataModel/Type/Json.php
+++ b/_/DataModel/Type/Json.php
@@ -8,23 +8,18 @@
 use verfriemelt\wrapped\_\DataModel\PropertyObjectInterface;
 use Override;
 
-use function json_encode;
-
-use const JSON_PRETTY_PRINT;
-use const JSON_THROW_ON_ERROR;
-
 class Json implements PropertyObjectInterface
 {
     public string|stdClass $data;
 
     final public function __construct(string $data = '{}')
     {
-        $this->data = json_decode($data, null, 512, JSON_THROW_ON_ERROR);
+        $this->data = json_decode($data, null, 512, \JSON_THROW_ON_ERROR);
     }
 
     public function toSqlFormat(): string
     {
-        return json_encode($this->data, JSON_THROW_ON_ERROR);
+        return \json_encode($this->data, \JSON_THROW_ON_ERROR);
     }
 
     #[Override]
@@ -48,7 +43,8 @@ public function toString(): string
         return $this->toSqlFormat();
     }
 
-    public function pretty(): string {
-        return json_encode($this->data, JSON_THROW_ON_ERROR ^ JSON_PRETTY_PRINT);
+    public function pretty(): string
+    {
+        return \json_encode($this->data, \JSON_THROW_ON_ERROR ^ \JSON_PRETTY_PRINT);
     }
 }