fix

Dockerfile

@@ -6,7 +6,7 @@ ENV GO111MODULE=on
 # ENV GOPROXY="https://goproxy.cn,direct"
 COPY go.mod go.sum ./
 #安装编译需要的环境gcc等, 同时CGO_ENABLED=1
-RUN apk add build-base && \
+RUN apk add --no-cache build-base --virtual .build-deps ca-certificates gcc g++ && \
     go mod download
 COPY . .
 RUN CGO_ENABLED=1 GOOS=linux GOARCH=$TARGETARCH go build -ldflags="-s -w" -installsuffix cgo -o server . && \