added settings for docker file

.drone.yml

@@ -5,16 +5,39 @@ platform:
   arch: arm64
 
 steps:
-- name: nexus3 build
-  image: docker:dind
-  volumes:
-  - name: dockersock
-    path: /var/run/docker.sock
-  commands:
-  - docker image ls
-  - docker build -f
+- name: dryrun-nexus3-build
+  image: plugins/docker
+  settings:
+    repo:
+      from_secret: docker_repo
+    cache_from:
+      from_secret: docker_repo
+    dockerfile: Dockerfile.rh.ubi
+    mirror:
+      from_secret: docker_regst
+    insecure: true
+    auto_tag: true
+    dry_run: true
+    # when:
+    #   event:
+    #   - pull_request
 
-volumes:
-- name: dockersock
-  host:
-    path: /var/run/docker.sock
+- name: docker-build-push
+  image: plugins/docker
+  settings:
+    repo:
+      from_secret: docker_repo
+    username:
+      from_secret: docker_user
+    password:
+      from_secret: docker_pass
+    registry:
+      from_secret: docker_regst
+    cache_from:
+      from_secret: docker_repo
+    dockerfile: Dockerfile
+    insecure: true
+    when:
+      event:
+        exclude:
+        - pull_request