ci: add Hugo blog CI/CD to k3s

- Enable Gitea Container Registry
- Dockerfile: nginx:alpine serving hugo public/
- Gitea Actions: build & push image + deploy to k3s
- k8s manifests: namespace hugo, deployment, service, ingress
- RBAC: allow runner to update deployments in hugo ns
- .gitignore: add public/ (CI builds it)

deploy/hugo-deployment.yaml

@@ -0,0 +1,41 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: hugo-blog
+  namespace: hugo
+  labels:
+    app: hugo-blog
+spec:
+  replicas: 1
+  strategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxUnavailable: 0
+      maxSurge: 1
+  selector:
+    matchLabels:
+      app: hugo-blog
+  template:
+    metadata:
+      labels:
+        app: hugo-blog
+    spec:
+      containers:
+      - name: nginx
+        image: git.luochen570.cn/luochen570/hugo-blog:latest
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 80
+          name: http
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 80
+          initialDelaySeconds: 5
+          periodSeconds: 10
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 80
+          initialDelaySeconds: 15
+          periodSeconds: 20

deploy/hugo-ingress.yaml

@@ -0,0 +1,24 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: hugo-blog
+  namespace: hugo
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt-prod
+spec:
+  ingressClassName: traefik
+  rules:
+  - host: hugo.test.luochen570.cn
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: hugo-blog
+            port:
+              number: 80
+  tls:
+  - hosts:
+    - hugo.test.luochen570.cn
+    secretName: hugo-test-luochen570-cn-tls

deploy/hugo-namespace.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  name: hugo

deploy/hugo-rbac.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: hugo-deployer
+  namespace: hugo
+rules:
+- apiGroups: ["apps"]
+  resources: ["deployments"]
+  verbs: ["get", "list", "watch", "patch", "update"]
+- apiGroups: [""]
+  resources: ["pods"]
+  verbs: ["get", "list", "watch"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: hugo-deployer-binding
+  namespace: hugo
+subjects:
+- kind: ServiceAccount
+  name: default
+  namespace: gitea-runner
+roleRef:
+  kind: Role
+  name: hugo-deployer
+  apiGroup: rbac.authorization.k8s.io

deploy/hugo-service.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: hugo-blog
+  namespace: hugo
+  labels:
+    app: hugo-blog
+spec:
+  type: ClusterIP
+  ports:
+  - port: 80
+    targetPort: 80
+    protocol: TCP
+    name: http
+  selector:
+    app: hugo-blog