add release script for publishing container images

wownero/release.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+set -ex
+
+TAG="${1}"
+BASE=$(echo ${TAG} | cut -d":" -f1)
+
+if [[ -z "${TAG}" ]]; then
+  echo "You must specify a container tag. ex: lalanza808/wownero:v0.9.2.0"
+  exit 1
+fi
+
+docker build -t "${TAG}" .
+
+docker tag "${TAG}" "${BASE}:latest"
+
+docker push "${TAG}"
+
+docker push "${BASE}:latest"