set configScanDir as package scoped var (#264)

set config.Install.env variables in environment

adding env to config to use across all stages

switch to config.Scan to read config

pkg/utils/env.go

@@ -0,0 +1,16 @@
+package utils
+
+import (
+	"os"
+	"strings"
+)
+
+func SetEnv(env []string) {
+
+	for _, e := range env {
+		pair := strings.SplitN(e, "=", 2)
+		if len(pair) >= 2 {
+			os.Setenv(pair[0], pair[1])
+		}
+	}
+}