add mirror section

README.md

@@ -212,12 +212,22 @@ def rotate_credentials_out(project):
     build.deactivate_user('/postgres/superuser', 'old_user_name')
 ```
 
-# Releasing and updating
-## Publish snapshot
+## Development & mirrors
+
+Development happens at: https://repo.prod.meissa.de/meissa/dda-devops-build
+
+Mirrors are:
+
+* https://gitlab.com/domaindrivenarchitecture/dda-devops-build (issues and PR, CI)
+
+For more details about our repository model see: https://repo.prod.meissa.de/meissa/federate-your-repos
+
+
+### Publish snapshot
 
 1. every push will be published as dev-dependency
 
-## Release
+### Release
 
 ```
 adjust version no in build.py to release version no.