feat: add Gitea deployment, services, and persistent volume claims

cluster/apps/gitea/gitea-db.yml

@@ -0,0 +1,44 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: gitea-db
+  namespace: default
+spec:
+  selector:
+    matchLabels:
+      app: gitea-db
+  template:
+    metadata:
+      labels:
+        app: gitea-db
+    spec:
+      initContainers:
+      - name: init-cleanup
+        image: busybox
+        command: ["rm", "-rf", "/var/lib/postgresql/data/lost+found"]
+        volumeMounts:
+        - name: db
+          mountPath: /var/lib/postgresql/data
+      containers:
+      - name: gitea-db
+        image: postgres:15.10
+        ports:
+        - containerPort: 5432
+        env:
+        - name: POSTGRES_USER
+          value: "gitea"
+        - name: POSTGRES_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: gitea-db-secret
+              key: password
+        - name: POSTGRES_DB
+          value: "gitea"
+        volumeMounts:
+        - name: db
+          mountPath: /var/lib/postgresql/data
+      volumes:
+      - name: db
+        persistentVolumeClaim:
+          claimName: longhorn-gitea-db