pipeline fix

.drone.yml

@@ -1,9 +1,10 @@
 kind: pipeline
+type: docker
 name: default
 
 steps:
   - name: test
-    image: clang
+    image: silkeh/clang:latest
     commands:
-    - clang hello.c -o hello
+      - clang hello.c -o hello
-    - ./hello
+      - ./hello