Remove reference to defunct gitlab docker image

see #14164

README.md

@@ -128,28 +128,7 @@ Docker
 
 - [Developing minetestserver with Docker](doc/developing/docker.md)
 
-We provide Minetest server Docker images using the GitLab mirror registry.
-
-Images are built on each commit and available using the following tag scheme:
-
-* `registry.gitlab.com/minetest/minetest/server:latest` (latest build)
-* `registry.gitlab.com/minetest/minetest/server:<branch/tag>` (current branch or current tag)
-* `registry.gitlab.com/minetest/minetest/server:<commit-id>` (current commit id)
-
-If you want to test it on a Docker server you can easily run:
-
-	sudo docker run registry.gitlab.com/minetest/minetest/server:<docker tag>
-
-If you want to use it in a production environment you should use volumes bound to the Docker host
-to persist data and modify the configuration:
-
-	sudo docker create -v /home/minetest/data/:/var/lib/minetest/ -v /home/minetest/conf/:/etc/minetest/ registry.gitlab.com/minetest/minetest/server:master
-
-Data will be written to `/home/minetest/data` on the host, and configuration will be read from `/home/minetest/conf/minetest.conf`.
-
-**Note:** If you don't understand the previous commands please read the official Docker documentation before use.
-
-You can also host your Minetest server inside a Kubernetes cluster. See our example implementation in [`misc/kubernetes.yml`](misc/kubernetes.yml).
+We provide a Dockerfile that can be used to build the server.
 
 
 Version scheme

misc/kubernetes.yml

@@ -1,53 +0,0 @@
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  labels:
-    app: minetest
-  name: minetest
-  namespace: default
-spec:
-  selector:
-    matchLabels:
-      app: minetest
-  template:
-    metadata:
-      labels:
-        app: minetest
-    spec:
-      containers:
-      - image: registry.gitlab.com/minetest/minetest/server:master
-        name: minetest
-        ports:
-        - containerPort: 30000
-          protocol: UDP
-        volumeMounts:
-        - mountPath: /var/lib/minetest
-          name: minetest-data
-        - mountPath: /etc/minetest
-          name: config
-      restartPolicy: Always
-      volumes:
-      - name: minetest-data
-        persistentVolumeClaim:
-          claimName: minetest-data
-      - configMap:
-          defaultMode: 420
-          name: minetest
-        name: config
----
-apiVersion: v1
-kind: Service
-metadata:
-  labels:
-    app: minetest
-  name: minetest
-  namespace: default
-spec:
-  ports:
-  - name: minetest
-    port: 30000
-    protocol: UDP
-  selector:
-    app: minetest
-  type: NodePort