update drone yml

.drone.yml

@@ -1,4 +1,3 @@
-
 kind: pipeline
 type: docker
 name: 1
@@ -6,17 +5,27 @@ platform:
   os: linux
   arch: amd64
 steps:
-
 - name: maven
   image: maven:3-jdk-10
+  volumes:
+    - name: cache 
+      path: /root/.m2 
   commands:
-  - mvn install -DskipTests=true
+    - mvn install -DskipTests=true
 
 - name: run 
   image: maven:3-jdk-8 
+  volumes:
+    - name: cache 
+      path: /root/.m2 
   commands: 
-  - mvn tomcat7:run
-  
+    - nohup mvn tomcat7:run &
+
+volumes:
+  - name: cache 
+    host:
+      path: /var/lib/cache
+
 trigger:
   branch:
   - master