Add script and instruction to build all the docker images by yourself

contrib/DockerFileBuildHelper/DockerFile.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace DockerFileBuildHelper
+{
+    public class DockerFile
+    {
+        public string DockerFileName { get; private set; }
+        public string DockerFilePath { get; private set; }
+
+        public static DockerFile Parse(string str)
+        {
+            var file = new DockerFile();
+            var lastPart = str.LastIndexOf('/');
+            file.DockerFileName = str.Substring(lastPart + 1);
+            if (lastPart == -1)
+            {
+                file.DockerFilePath = ".";
+            }
+            else
+            {
+                file.DockerFilePath = str.Substring(0, lastPart);
+            }
+            return file;
+        }
+    }
+}