created build.sh for every docker versions "14, 15, 16"

14.0/build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker build -t guikipt/odoo14 .

15.0/build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker build -t guikipt/odoo15 .

16.0/build.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker build -t guikipt/odoo16 .