bump buck to 2019.05.06.01 (#39)

Author: dulmandakh

Dockerfile

@@ -6,7 +6,7 @@ LABEL Description="This image provides a base Android development environment fo
 ARG SDK_VERSION=sdk-tools-linux-4333796.zip
 ARG ANDROID_BUILD_VERSION=28
 ARG ANDROID_TOOLS_VERSION=28.0.3
-ARG BUCK_VERSION=2019.01.10.01
+ARG BUCK_VERSION=2019.05.06.01
 ARG NDK_VERSION=17c
 ARG WATCHMAN_VERSION=4.9.0