Add 'DockerHelp.md'

DockerHelp.md

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+If you get permission errors when running `docker version`, follow these instructions (on Linux) to give yourself permissions
+1. Run `stat /var/run/docker.sock` to see the permissions for the docker socket (The file path is printed out when you get a permission error, yours may be different). You should see a line like
+```
+Access: (0660/srw-rw----)  Uid: (    0/    root)   Gid: ( 1003/  root)
+```
+The above tells you that the docker socket belongs to the group with GID 1003 (root) and that the group has neither read nor write permissions.
+2. Change the socket's group to be yours with `sudo chgrp "$USER" /var/run/docker.sock`. Confirm this change by running `stat` again.
+3. Give the group read and write privileges with `sudo chmod g+rw /var/run/docker.sock`
+4. Confirm that you can run `docker version` without permission errors.
+
+
+
+- (Alternative approach for multiuser systems which requires logging out and back in again)[https://stackoverflow.com/questions/48957195/how-to-fix-docker-got-permission-denied-issue]