- Added Kubernetes deployment section to the documentation

- Small formating fixes to the documentation

docs/known-issues/known-issues.rst

@@ -42,6 +42,7 @@ Newer Operating system locales
 the local-archive format, which is now incompatible with our used glibc 2.26.
 
 Mostly affected are:
+
 - Fedora 23+
 - Ubuntu 18.04
 - CentOS / RHEL 8
@@ -93,3 +94,24 @@ example to pass the correct locale information on boot.
     [Install]
     WantedBy=multi-user.target
 
+
+Merge stucks in "merging" status
+--------------------------------
+
+Similar issues:
+
+- Pull Request duplicated and/or stucks in "creating" status.
+
+Mostly affected are:
+
+- Kubernetes AWS EKS setup with NFS as shared storage
+- AWS EFS as shared storage
+
+Workaround:
+
+1. Manually clear the repo cache via UI: 
+:menuselection:`Repository Settings --> Caches --> Invalidate repository cache`
+
+1. Open problematic PR and reset status to "created"
+
+Now you can merge PR normally