Adding git secret in datalab namespace

k8s/README.md

@@ -84,3 +84,22 @@ Migate
 
 
 Backup
+
+## Add private docker registry
+
+*Current state:* Registry of hub.moritzgraf.de:5000 is used.
+
+Create credentials secret [according to docu](https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/#create-a-secret-by-providing-credentials-on-the-command-line):
+
+```sh
+namespaces="datalab"
+for i in $namespaces ; do
+  kubectl create secret docker-registry regcred \
+    --docker-server=hub.moritzgraf.de:5000 \
+    --docker-username=moritz \
+    --docker-password='xxx' \
+    --docker-email=moritz@moritzgraf.de \
+    --dry-run -o yaml > ./${i}/docker-pull.yaml.secret
+done
+```
+