Add Kubernetes Helm deployment pipeline

.drone.yml

@@ -1,13 +1,13 @@
 kind: pipeline
 type: docker
-name: backend-docker
+name: backend-k8s
 
 clone:
   depth: 50
 
 trigger:
   branch:
-    - docker
+    - k8s
   event:
     - push
 
@@ -15,10 +15,13 @@ steps:
   - name: build-image
     image: docker.m.daocloud.io/library/docker:27-cli
     commands:
-      - docker build -t cdchen-backend:docker .
+      - docker build -t cdchen-backend:k8s-${DRONE_COMMIT_SHA:0:8} .
 
-  - name: deploy
-    image: docker.m.daocloud.io/library/docker:27-cli
+  - name: deploy-k8s
+    image: cdchen-k8s-tools:latest
+    network_mode: teaching-k8s
+    environment:
+      HOME: /home/cdchen
     commands:
-      - docker rm -f cdchen-backend || true
-      - docker run -d --name cdchen-backend --restart unless-stopped --network gitea_default -p 8089:8080 cdchen-backend:docker
+      - minikube image load cdchen-backend:k8s-${DRONE_COMMIT_SHA:0:8} -p teaching-k8s
+      - helm upgrade --install backend ./chart --namespace demo --create-namespace --set image.repository=cdchen-backend --set image.tag=k8s-${DRONE_COMMIT_SHA:0:8}