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@@ -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