Fix for code style

Signed-off-by: yankay <kay.yan@daocloud.io>

CHANGELOG-4.0.md

@@ -44,6 +44,10 @@ See [code changes](https://github.com/etcd-io/etcd/compare/v3.5.0...v4.0.0) and
   - `etcd --corrupt-check-time=12h` by default, to check cluster database hashes for every 12-hour.
 - Enable TLS 1.13, deprecate TLS cipher suites.
 
+### Other
+
+- Use Distroless as base image to make the image less vulnerable and reduce image size.
+
 ### Go
 
 - Require [*Go 2*](https://blog.golang.org/go2draft).

Dockerfile-release.amd64

@@ -1,5 +1,5 @@
 FROM --platform=linux/amd64 busybox:1.34.1 as source
-FROM --platform=linux/amd64  gcr.io/distroless/base-debian11
+FROM --platform=linux/amd64 gcr.io/distroless/base-debian11
 
 COPY --from=source /bin/sh /bin/sh
 COPY --from=source /bin/mkdir /bin/mkdir

Dockerfile-release.arm64

@@ -1,5 +1,5 @@
 FROM --platform=linux/arm64 busybox:1.34.1 as source
-FROM --platform=linux/arm64  gcr.io/distroless/base-debian11
+FROM --platform=linux/arm64 gcr.io/distroless/base-debian11
 
 COPY --from=source /bin/sh /bin/sh
 COPY --from=source /bin/mkdir /bin/mkdir

Dockerfile-release.ppc64le

@@ -1,10 +1,9 @@
 FROM --platform=linux/ppc64le busybox:1.34.1 as source
-FROM --platform=linux/ppc64le  gcr.io/distroless/base-debian11
+FROM --platform=linux/ppc64le gcr.io/distroless/base-debian11
 
 COPY --from=source /bin/sh /bin/sh
 COPY --from=source /bin/mkdir /bin/mkdir
 
-
 ADD etcd /usr/local/bin/
 ADD etcdctl /usr/local/bin/
 ADD etcdutl /usr/local/bin/

Dockerfile-release.s390x

@@ -1,5 +1,5 @@
 FROM --platform=linux/s390x busybox:1.34.1 as source
-FROM --platform=linux/s390x  gcr.io/distroless/base-debian11
+FROM --platform=linux/s390x gcr.io/distroless/base-debian11
 
 COPY --from=source /bin/sh /bin/sh
 COPY --from=source /bin/mkdir /bin/mkdir