follow proxy settings (#105)

__tests__/verify-node.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+if [ -z "$1" ]; then
+  echo "Must supply node version argument"
+  exit 1
+fi
+
+node_version="$(node --version)"
+echo "Found node version '$node_version'"
+if [ -z "$(echo $node_version | grep v$1)" ]; then
+  echo "Unexpected version"
+  exit 1
+fi
+
+echo "Testing npm install"
+mkdir -p test-npm-install
+cd test-npm-install
+npm init -y || exit 1
+npm install @actions/core || exit 1