Shorten down the CI

.drone.yml

@@ -1,17 +1,7 @@
 ---
 kind: pipeline
-
 name: default
-
 steps:
-  - name: Build Keycloak docker image
-    image: docker:stable
-    volumes:
-      - name: docker_sock
-        path: /var/run/docker.sock
-    commands:
-      - docker build --no-cache -t autonomic/keycloak:drone .
-
   - name: Deploy Keycloak with Dokku
     image: appleboy/drone-git-push:0.2.0-linux-amd64
     settings: