Fix the support email address

Change-Id: I6115e3014ac8c8479df82c5594543d7d991af854
diff --git a/Dockerfile b/Dockerfile
index cf0c189..51f779d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 FROM debian:9.4
-MAINTAINER support-aiyprojects@google.com
+MAINTAINER coral-support@google.com
 
 # Install the prerequisite packages into the image.
 ADD ./build /build