From 97c5baa30ca7368db3243ec9bf13e8a1d1cbdb88 Mon Sep 17 00:00:00 2001
From: Saeid Bostandoust <49065072+ssbostan@users.noreply.github.com>
Date: Thu, 27 Feb 2020 19:37:51 +0330
Subject: [PATCH] adding some dockerfile commands

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 7739c9d..6d63b35 100644
--- a/README.md
+++ b/README.md
@@ -350,6 +350,8 @@ Here are some common text editors and their syntax highlighting modules you coul
 * [ONBUILD](https://docs.docker.com/engine/reference/builder/#onbuild) adds a trigger instruction when the image is used as the base for another build.
 * [STOPSIGNAL](https://docs.docker.com/engine/reference/builder/#stopsignal) sets the system call signal that will be sent to the container to exit.
 * [LABEL](https://docs.docker.com/config/labels-custom-metadata/) apply key/value metadata to your images, containers, or daemons.
+* [SHELL](https://docs.docker.com/engine/reference/builder/#shell) override default shell is used by docker to run commands.
+* [HEALTHCHECK](https://docs.docker.com/engine/reference/builder/#healthcheck) tells docker how to test a container to check that it is still working.
 
 ### Tutorial