From 95ce54a8deb9216dd726034bc77328c55ea613a2 Mon Sep 17 00:00:00 2001
From: leonGravel <la9249@163.com>
Date: Fri, 22 Mar 2019 05:49:21 +0800
Subject: [PATCH] give `docker save` a gzip usage guide (#1678)

give `docker save` a gzip usage guide

Signed-off-by: Ao Li <la9249@163.com>
---
 docs/reference/commandline/save.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/reference/commandline/save.md b/docs/reference/commandline/save.md
index 166ee755cc..cfb5045a3b 100644
--- a/docs/reference/commandline/save.md
+++ b/docs/reference/commandline/save.md
@@ -53,6 +53,14 @@ $ docker save -o fedora-all.tar fedora
 $ docker save -o fedora-latest.tar fedora:latest
 ```
 
+### Save an image to a tar.gz file using gzip
+
+You can use gzip to save the image file and make the backup smaller.
+
+```bash
+docker save myimage:latest | gzip > myimage_latest.tar.gz
+```
+
 ### Cherry-pick particular tags
 
 You can even cherry-pick particular tags of an image repository.