fix: use container.type=kubernetes and k8s:// labels for runner

k8s/base/gitea-runner-config.yaml

@@ -9,30 +9,27 @@ data:
       level: info
     runner:
       file: .runner
-      capacity: 2
+      capacity: 4
       timeout: 3h
       fetch_timeout: 5s
       fetch_interval: 2s
       labels:
-        - "ubuntu-latest:docker://docker.gitea.com/runner-images:ubuntu-latest"
-        - "ubuntu-24.04:docker://docker.gitea.com/runner-images:ubuntu-24.04"
-        - "ubuntu-22.04:docker://docker.gitea.com/runner-images:ubuntu-22.04"
-      envs:
-        DOCKER_HOST: "tcp://localhost:2376"
-        DOCKER_CERT_PATH: "/certs/client"
-        DOCKER_TLS_VERIFY: "1"
+        - "ubuntu-latest:k8s://docker.gitea.com/runner-images:ubuntu-latest"
+        - "ubuntu-24.04:k8s://docker.gitea.com/runner-images:ubuntu-24.04"
+        - "ubuntu-22.04:k8s://docker.gitea.com/runner-images:ubuntu-22.04"
     cache:
       enabled: true
       dir: ""
       host: ""
       port: 0
     container:
-      backend: kubernetes
+      type: kubernetes
       kubernetes:
         namespace: geocrop
         service_account_name: gitea-runner-sa
         privileged: false
         pull_policy: IfNotPresent
       force_pull: true
+
     valid_volumes:
       - "/certs/client"