fix:修改dockerfile

Dockerfile

@@ -15,8 +15,8 @@ WORKDIR /src
 ARG GOTOOLCHAIN=auto
 ENV GOTOOLCHAIN=${GOTOOLCHAIN}
 ENV CGO_ENABLED=0
-ENV GOPROXY=https://goproxy.cn,direct
+ENV GOPROXY=https://goproxy.cn,https://proxy.golang.com.cn,direct
-ENV GOSUMDB=off
+ENV GOSUMDB=sum.golang.google.cn
 COPY core/go.mod core/go.sum ./core/
 COPY agent/go.mod agent/go.sum ./agent/
 RUN cd core && go mod download