fix: share docker socket in gitea-runner to fix CI build failure

k8s/base/gitea-runner.yaml

@@ -23,11 +23,11 @@ spec:
           value: "3daF7zwBC94Q5YCb1mW1VnfPi4L7pgMxSHhKOBOn"
         - name: GITEA_RUNNER_NAME
           value: "k3s-runner"
-        - name: DOCKER_HOST
-          value: tcp://localhost:2375
         volumeMounts:
         - name: runner-data
           mountPath: /data
+        - name: docker-socket
+          mountPath: /var/run
       - name: dind
         image: docker:dind
         securityContext:
@@ -38,8 +38,12 @@ spec:
         volumeMounts:
         - name: docker-graph-storage
           mountPath: /var/lib/docker
+        - name: docker-socket
+          mountPath: /var/run
       volumes:
       - name: runner-data
         emptyDir: {}
       - name: docker-graph-storage
         emptyDir: {}
+      - name: docker-socket
+        emptyDir: {}