Add dind

.drone.yml

@@ -15,6 +15,27 @@ steps:
     commands:
       - go test -cover -v ./...
 
+  - name: dock
+    image: docker:dind
+    volumes:
+      - name: dockersock
+        path: /var/run
+    commands:
+      - sleep 5 # give docker enough time to start
+      - docker ps -a
+
+services:
+  - name: docker
+    image:
+      docker:dind
+      privileged: true
+    volumes:
+      - name: dockersock
+        path: /var/run
+    volumes:
+      - name: dockersock
+        temp: {}
+
 volumes:
   - name: deps
     temp: {}