chore: Use printenv command in printenv script and refactor

scripts/print-env.sh

@@ -1,5 +0,0 @@
-#!/bin/bash
-# file: print-env.sh
-# description: Print env variable.
-
-echo "${ENV}"

scripts/printenv.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# file: printenv.sh
+# description: Print all environment variables. Used for debugging.
+
+printenv | sort