Improves docs and add docker-config for java-spring-boot (#44)

* Added Comment

* Added Config

Author: jaisontj

java-spring-boot/Dockerfile

@@ -8,5 +8,7 @@ WORKDIR /spring-boot
 Add . /spring-boot
 
 RUN mvn package
+
+#Replace java-spring-boot-1.0-SNAPSHOT.jar with <artifactId>-<version>.jar specified in your pom.xml 
 CMD ["/usr/lib/jvm/java-8-openjdk-amd64/bin/java", "-jar", "target/java-spring-boot-1.0-SNAPSHOT.jar"]
 

java-spring-boot/docker-config.yaml

@@ -0,0 +1,4 @@
+image: "java:<tag>"
+port: 8080
+volume_mounts: null
+env_variables: []