remove obsolete cp

Author: vkuznet

Dockerfile

@@ -8,7 +8,7 @@ WORKDIR $WDIR
 RUN mkdir /build
 RUN git clone https://github.com/CHESSComputing/$PROJECT
 ARG CGO_ENABLED=0
-RUN cd $PROJECT && make && cp srv /build && cp -r static /build
+RUN cd $PROJECT && make && cp srv /build
 
 # build final image for given image
 FROM alpine as final