Added docker directory and scripts for resetting Docker

docker/README.md

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+# Docker Scripts
+
+Use the scripts in this directory to execute tasks in Docker.  Please note that these scripts are intended to be executed from this app's root directory.

docker/nuke

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+#!/bin/bash
+
+# This script destroys all Docker containers and images.
+# SOURCE: https://gist.github.com/JeffBelback/5687bb02f3618965ca8f
+
+docker/nukec
+
+echo '--------------------------------------'
+echo 'Killing and removing all Docker images'
+for i in $(docker images -a -q)
+do
+  docker kill $i; wait;
+  docker rmi -f $i; wait;
+done;
+
+echo '------------'
+echo 'docker ps -a'
+docker ps -a
+
+echo '----------------'
+echo 'docker images -a'
+docker images -a
+
+wait

docker/nukec

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+#!/bin/bash
+
+# This script destroys all Docker containers and networks but leaves the Docker images alone.
+
+echo '-----------------------'
+echo 'docker network prune -f'
+docker network prune -f
+
+echo '------------------------------------------'
+echo 'Killing and removing all Docker containers'
+for i in $(docker ps -a -q)
+do
+  docker kill $i; wait;
+  docker rm -f $i; wait;
+done;
+
+echo '------------'
+echo 'docker ps -a'
+docker ps -a