Update deploy-k8s.md

docs/guides/deploy-k8s.md

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 # Deploying on Kubernetes
 
-This guide explains how to deploy the Sensitive Data Archive (SDA) in kubernetes.
-
 > TODO:
 > This guide is a stub and has yet to be finished.
 > If you have feedback to give on the content you would like to see, please contact us on
 > [github](https://github.com/neicnordic/neic-sda)!
+
+
+## Guide summary 
+
+This guide explains how to deploy the Sensitive Data Archive (SDA) in kubernetes.
+- What it intends to cover
+- What to expect, scope, explain level of details
+- How self-contained the guide is
+- Examples expected to work directly or not, must be configured (example configs, most updated version?)
+
+## Local security / zone considerations
+
+- Differences in deployment make concrete examples challenges, explain what can be exemplified and what not in this guide
+
+## Charts overview
+
+## System requirements
+
+ - k8s/helm minimal versions
+ - rough estimate of hardware resources
+
+## Minimal working configuration 
+
+## Security issues
+
+ - Enabling TLS example
+ - Secret handling example
+
+## Network policies
+
+ - DNS names and ingress for services
+
+## Complementary services
+
+ - sda-auth, sda-doa, sda-download
+
+