Add missing flags to docker command to mount the working dir and set …

…-cap-add=sys_nice (#383)

REME.md update

Authors:
  - David Gardner (https://github.com/dagardner-nv)

Approvers:
  - Christopher Harris (https://github.com/cwharris)
  - Michael Demoret (https://github.com/mdemoret-nv)

URL: #383

README.md

@@ -155,9 +155,13 @@ docker build -t mrc:latest .
 ```
 To run the container
 ```bash
-docker run --gpus all --rm -it mrc:latest /bin/bash
+docker run --gpus all --cap-add=sys_nice -v $PWD:/work --rm -it mrc:latest /bin/bash
 ```
 
+> **Note:**
+> Users wishing to debug MRC in a Docker container should add the following to the `docker run` command:
+> `--cap-add=SYS_PTRACE`
+
 ## Quickstart Guide
 
 To quickly learn about both the C++ and Python MRC APIs, including following along with various complexity examples, we recommend following the MRC Quickstart Repository located [here](/docs/quickstart/README.md). This tutorial walks new users through topics like