Update Dockerfile

minio/Dockerfile

@@ -1,3 +1,19 @@
+FROM golang:1.15-alpine as builder
+
+LABEL maintainer="MinIO Inc <dev@min.io>"
+ARG VERSION
+ARG TARGETARCH
+ENV VERSION $VERSION
+ENV GOPATH /go
+ENV CGO_ENABLED 0
+ENV GO111MODULE on
+
+RUN  \
+     apk add --no-cache git && \
+     git clone -b ${VERSION} --depth 1 https://github.com/minio/minio && cd minio && \
+     go install -v -ldflags "$(go run buildscripts/gen-ldflags.go)"
+
+
 FROM alpine:3.13.0
 
 ENV MINIO_ACCESS_KEY_FILE=access_key \
@@ -8,18 +24,14 @@ ENV MINIO_ACCESS_KEY_FILE=access_key \
 
 EXPOSE 9000
 
-COPY entrypoint.sh /usr/bin/docker-entrypoint.sh
-
 RUN  \
      apk add --no-cache ca-certificates 'curl>7.61.0' 'su-exec>=0.2' && \
      echo 'hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4' >> /etc/nsswitch.conf
 
 ARG VERSION
-ARG TARGETARCH
 ENV VERSION $VERSION
-ADD https://dl.min.io/server/minio/release/linux-${TARGETARCH}/archive/minio.${VERSION} /usr/bin/minio
-
-RUN chmod +x /usr/bin/minio
+COPY --from=builder /go/bin/minio /usr/bin/minio
+COPY --from=builder /go/minio/dockerscripts/docker-entrypoint.sh /usr/bin/
 
 ENTRYPOINT ["/usr/bin/docker-entrypoint.sh"]