Create Readme.md entry for deployment database initialization

deployment/README.md

@@ -8,3 +8,47 @@ We have tested two different Kubernetes providers: [Minikube](./minikube/README.
 and [Digital Ocean](./digital-ocean/README.md).
 
 Check out the specific documentation for your provider. After that, choose whether you want to go with the recommended deploy option [Helm](./helm/README.md), or use Kubernetes to apply the configuration for [ocelot.social](./ocelot-social/README.md).
+
+## Initialise Database For Production After Deployment
+
+After the first deployment of the new network on your server, the database must be initialized to start your network. This involves setting up a default administrator with the following data:
+
+- E-mail: admin@example.org
+- Password: 1234
+
+{% hint style="danger" %}
+TODO: When you are logged in for the first time, please change your (the admin's) e-mail to an existing one and change your password to a secure one !!!
+{% endhint %}
+
+Run the following command in the Docker container of the or a backend:
+
+{% tabs %}
+{% tab title="Kubernetes For Docker" %}
+
+```bash
+# with explicit pod backend name
+$ kubectl -n ocelot-social exec -it <backend-name> yarn prod:migrate init
+
+# or
+
+# if you have only one backend grep it
+$ kubectl -n ocelot-social exec -it $(kubectl -n ocelot-social get pods | grep backend | awk '{ print $1 }') yarn prod:migrate init
+
+# or
+
+# sh in your backend and do the command here
+$ kubectl -n ocelot-social exec -it $(kubectl -n ocelot-social get pods | grep backend | awk '{ print $1 }') sh
+backend: $ yarn prod:migrate init
+backend: $ exit
+```
+
+{% endtab %}
+{% tab title="Docker-Compose Local" %}
+
+```bash
+# exec in backend
+$ docker-compose exec backend yarn run db:migrate init
+```
+
+{% endtab %}
+{% endtabs %}