update drone syntax for 1.x

.drone.yml

@@ -1,8 +1,22 @@
 ---
-pipeline:
+kind: pipeline
-  build:
+name: default
-    image: rancher/dapper:1.10.3
+
-    volumes:
+platform:
-    - /var/run/docker.sock:/var/run/docker.sock
+  os: linux
-    commands:
+  arch: amd64
-    - KERNEL_CHECK=0 dapper ci
+
+steps:
+- name: build
+  pull: default
+  image: rancher/dapper:1.10.3
+  commands:
+  - KERNEL_CHECK=0 dapper ci
+  volumes:
+  - name: socket
+    path: /var/run/docker.sock
+
+volumes:
+- name: socket
+  host:
+    path: /var/run/docker.sock