Update drone config to 1.x

.drone.yml

@@ -8,14 +8,15 @@ platform:
 
 steps:
 - name: build
-  pull: always
   image: spritsail/docker-build
+  pull: always
   settings:
     use_cache: true
     repo: busybox-dev
 
 - name: test
   image: busybox-dev
+  pull: never
   commands:
   - set -ex
   - ldconfig -p
@@ -46,6 +47,6 @@ steps:
 
 ---
 kind: signature
-hmac: ed993c62abb165265b5e3569eb16c4e203db7921840c35932a96962182295327
+hmac: 91a213eb8dd33d761da3dabb4fb6d4b05bdbf55ea47ba40c1e9770a5dafbcecb
 
 ...