convert to use initContainer

staging/javaweb-tomcat-sidecar/javaweb.yaml

@@ -3,15 +3,16 @@ kind: Pod
 metadata:
   name: javaweb
 spec:
-  containers:
+  initContainers:
     - image: resouer/sample:v1
       name: war
       volumeMounts:
         - mountPath: /app
           name: app-volume
+  containers:
     - image: resouer/mytomcat:7.0
       name: tomcat
-    command: ["sh","-c","/root/apache-tomcat-7.0.42-v2/bin/start.sh"]
+      command: ["sh", "-c", "/root/apache-tomcat-7.0.42-v2/bin/start.sh"]
       volumeMounts:
         - mountPath: /root/apache-tomcat-7.0.42-v2/webapps
           name: app-volume
@@ -21,4 +22,3 @@ spec:
   volumes:
     - name: app-volume
       emptyDir: {}
-