Revert "Temporary drone docker in docker workaround"

This reverts commit 26f8618bed.

.drone.yml

@@ -19,9 +19,7 @@ name: build:latest
 
 steps:
   - name: docker release
-    # image: plugins/docker
-    # Temporary work-around for https://github.com/drone-plugins/drone-docker/pull/327
-    image: techknowlogick/drone-docker
+    image: plugins/docker
     depends_on: [clone]
     user: 0
     settings:
@@ -45,9 +43,7 @@ name: build:tags
 
 steps:
   - name: build $DRONE_TAG
-    # image: plugins/docker
-    # Temporary work-around for https://github.com/drone-plugins/drone-docker/pull/327
-    image: techknowlogick/drone-docker
+    image: plugins/docker
     user: 0
     depends_on: [clone]
     settings:
@@ -71,9 +67,7 @@ name: build:nightly
 
 steps:
   - name: docker release
-    # image: plugins/docker
-    # Temporary work-around for https://github.com/drone-plugins/drone-docker/pull/327
-    image: techknowlogick/drone-docker
+    image: plugins/docker
     user: 0
     depends_on: [clone]
     settings: