Add gitea at git.rubenhensen.nl

Single-pod sqlite install (simplest path for a home git host). HTTPS-only,
no SSH listener for now. Wired into the Hetzner tunnel like the other
rubenhensen.nl services.

First visitor to git.rubenhensen.nl can register; Gitea auto-promotes the
first user to admin.

gitea/gitea-deployment.yaml

@@ -0,0 +1,60 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: gitea
+  labels:
+    app: gitea
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      app: gitea
+  template:
+    metadata:
+      labels:
+        app: gitea
+    spec:
+      securityContext:
+        fsGroup: 1000
+      containers:
+        - name: gitea
+          image: gitea/gitea:1
+          env:
+            - name: USER_UID
+              value: "1000"
+            - name: USER_GID
+              value: "1000"
+            - name: TZ
+              value: Europe/Amsterdam
+            - name: GITEA__server__ROOT_URL
+              value: https://git.rubenhensen.nl/
+            - name: GITEA__server__DOMAIN
+              value: git.rubenhensen.nl
+            - name: GITEA__server__PROTOCOL
+              value: http
+            - name: GITEA__server__HTTP_PORT
+              value: "3000"
+            - name: GITEA__server__DISABLE_SSH
+              value: "true"
+            - name: GITEA__database__DB_TYPE
+              value: sqlite3
+            - name: GITEA__database__PATH
+              value: /data/gitea/gitea.db
+            - name: GITEA__security__INSTALL_LOCK
+              value: "true"
+            - name: GITEA__log__MODE
+              value: console
+          ports:
+            - containerPort: 3000
+              name: http
+              protocol: TCP
+          volumeMounts:
+            - mountPath: /data
+              name: data
+      restartPolicy: Always
+      volumes:
+        - name: data
+          persistentVolumeClaim:
+            claimName: gitea-data