adjust

docker/Dockerfile.go_build

@@ -4,7 +4,7 @@ RUN mkdir -p /go/src/github.com/chrislusf/
 RUN git clone https://github.com/chrislusf/seaweedfs /go/src/github.com/chrislusf/seaweedfs
 RUN cd /go/src/github.com/chrislusf/seaweedfs/weed \
   && export LDFLAGS="-X github.com/chrislusf/seaweedfs/weed/util.COMMIT=$(git rev-parse --short HEAD)" \
-  && go install -ldflags ${LDFLAGS}
+  && go install -ldflags "${LDFLAGS}"
 
 FROM alpine AS final
 LABEL author="Chris Lu"