#!/bin/bash
PRIVATE_KEY='-----BEGIN PRIVATE KEY-----\nMIIEvQIBA\n-----END PRIVATE KEY-----\n'
sed "s,PRIVATE_KEY,$(sed 's/[&/\]/\\&/g' <<< "$PRIVATE_KEY"),g" <<< "PRIVATE_KEY"
IyEvYmluL2Jhc2gKUFJJVkFURV9LRVk9Jy0tLS0tQkVHSU4gUFJJVkFURSBLRVktLS0tLVxuTUlJRXZRSUJBXG4tLS0tLUVORCBQUklWQVRFIEtFWS0tLS0tXG4nCgpzZWQgInMsUFJJVkFURV9LRVksJChzZWQgJ3MvWyYvXF0vXFwmL2cnIDw8PCAiJFBSSVZBVEVfS0VZIiksZyIgPDw8ICJQUklWQVRFX0tFWSI=