Merge pull request #375 from billimek/fix_dockerhub

sleeping and syncing to fix issues with docker hub builds

Author: michaelshobbs

Dockerfile

@@ -8,4 +8,4 @@ RUN cd /src && ./build.sh "$(cat VERSION)"
 
 ONBUILD COPY ./build.sh /src/build.sh
 ONBUILD COPY ./modules.go /src/modules.go
-ONBUILD RUN cd /src && chmod +x ./build.sh && ./build.sh "$(cat VERSION)-custom"
+ONBUILD RUN cd /src && chmod +x ./build.sh && sleep 1 && sync && ./build.sh "$(cat VERSION)-custom"