TASK: Update readme

* To be consistent with new naming after transferring ownership to
  official TYPO3.

Author: DanielSiepmann

Readme.rst

@@ -3,29 +3,33 @@
 About
 =====
 
-This repo should provide all parts to enable TYPO3 Documentation rendering through Gitlab CI.
+This repo provide all parts to enable TYPO3 Documentation rendering.
 
-You also can use this to render your documentation locally the same way.
+You also can use this to render your documentation locally.
+
+It's also used in CI to render documentations.
 
 Requirements
 ============
 
 - Docker
 
-Install
-=======
-
-::
-
-    docker build -t danielsiepmann/t3docs-ci .
-
 Usage
 =====
 
 ``cd`` into an extension folder, containing the ``Documentation`` folder.
 
 Run::
 
-    docker run -v "$PWD":/tmp/makedir danielsiepmann/t3docs-ci
+    docker run -v "$PWD":/tmp/makedir t3docs/renderdocumentation
 
 The results are inside the new ``build`` folder.
+
+Install
+=======
+
+By running the docker image, Docker will pull it if not already persent.
+
+If you want to build the docker image locally, clone the repository and run::
+
+    docker build -t t3docs/renderdocumentation .