fix(core): update to v2 of code-server

Dockerfile

@@ -1,4 +1,4 @@
-FROM codercom/code-server
+FROM codercom/code-server:v2
 LABEL author="Lossless GmbH <hello@lossless.com>"
 
 USER root

readme.md

@@ -18,6 +18,8 @@ a vscode image with everything installed needed to run a vscode instance
 
 ## Usage
 
+This image uses codercom/code-server:v2 as base. As a result you can use it largely like the base image.
+
 ```
 docker run -it -p 127.0.0.1:8080:8080 -v "${HOME}/.local/share/code-server:/home/coder/.local/share/code-server" -v "$PWD:/home/coder/project" registry.gitlab.com/hosttoday/ht-docker-vscode
 ```