Move Dockerfile from Gradle to Maven.

Change-Id: I1f2b50d3b2cfe18b229573b52e1e9860f038a75c
diff --git a/src/main/docker/Dockerfile.jvm b/src/main/docker/Dockerfile.jvm
index 5c726c5..e059b5d 100644
--- a/src/main/docker/Dockerfile.jvm
+++ b/src/main/docker/Dockerfile.jvm
@@ -23,8 +23,8 @@
   && chmod -R "g+rwX" /deployments \
   && chown -R java:java /deployments
 
-COPY build/lib/* /deployments/lib/
-COPY build/*-runner.jar /deployments/app.jar
+COPY target/lib/* /deployments/lib/
+COPY target/*-runner.jar /deployments/app.jar
 EXPOSE 8080
 
 USER java