V4.x Docker Refactoring and Docs

docker/conf/memory_check.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+max_mem=$1
+cur_mem=$(</sys/fs/cgroup/memory.current)
+health_file="/tmp/health.stat"
+if [ -f "$health_file" ]; then
+    echo "$health_file exists."
+else
+    echo "$health_file does not exist. Creating"
+    echo 0 > "$health_file"
+fi
+health=$(<$health_file)
+echo "Testing Mem: $cur_mem / $max_mem"
+if [[ max_mem -gt cur_mem ]]
+then
+    echo 0 > "$health_file"
+    echo "All Ok"
+    exit 0
+else
+    new_val=$((1+$health))
+    echo "Un-healthy! Check #$new_val"
+    echo $new_val > "$health_file"
+    if (($new_val > 3)); then
+        echo "Starting a restart of this the container..."
+        kill -SIGTERM 1
+    fi
+    exit 1
+fi