br: unified docker image align with tidb

br/docker/Dockerfile

@@ -1,22 +1,23 @@
 # For loading data to TiDB
-FROM golang:1.18-buster as go-ycsb-builder
+FROM golang:1.18.1-alpine as go-ycsb-builder
 WORKDIR /go/src/github.com/pingcap/
+
+RUN apk add --no-cache \
+    wget \
+    make \
+    git \
+    binutils-gold \
+    gcc \
+    musl-dev
+
 RUN git clone https://github.com/pingcap/go-ycsb.git --depth=1 && \
     cd go-ycsb && \
     make
 
 # For operating minio S3 compatible storage
 FROM minio/mc as mc-builder
 
-FROM golang:1.18-buster
-
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    git \
-    curl \
-    vim \
-    less \
-    default-mysql-client \
-    && rm -rf /var/lib/apt/lists/*
+FROM golang:1.18.1-alpine
 
 WORKDIR /go/src/github.com/pingcap/br
 COPY . .