Move run inside separate CMD and make version independent.

Dockerfile

 #
 # Docker file for Spring Boot Admin
 #
-
 FROM maven:3.3.9-jdk-8-alpine
 MAINTAINER Merapar
 
@@ -9,7 +8,7 @@ ENV TZ UTC
 
 RUN     mkdir -p /usr/src/app
 WORKDIR /usr/src/app
-
 ADD     . /usr/src/app
+RUN     mvn package && cp target/*.jar /usr/src/app/spring-boot-admin.jar
 
-CMD     mvn package && java -jar target/spring-boot-admin-1.4.4.jar
\ No newline at end of file
+CMD ["java", "-XX:MinHeapFreeRatio=10", "-XX:MaxHeapFreeRatio=10", "-Xms10m", "-jar", "spring-boot-admin.jar" ]
\ No newline at end of file