feat: add build script

Author: a60814billy

build.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -xeuo pipefail
+
+if [[ ! -d "$PWD/build" ]]; then
+  mkdir build
+fi
+
+rm -rf build/*
+
+pushd charts/codimd
+  helm dependency update
+popd
+
+pushd build
+  helm package ../charts/codimd
+  git checkout gh-pages
+  helm repo index --merge ../index.yaml .
+  mv codimd*.tgz ../
+  mv index.yaml ../
+popd