add helper scripts

build.sh

@@ -0,0 +1,11 @@
+#!/bin/bash --noprofile
+
+set -x -o pipefail
+
+tag=$1
+build=0
+
+docker build -t ${tag}:latest .
+if [[ $build -gt 0 ]]; then
+    docker build -t ${tag}:${build} .
+fi