system-agent-install.sh contains multiple shebangs

[lindhe]

When I go to to https://rancher.example.com/system-agent-install.sh for my Rancher instance, I get served a shell script that beings like this:

#!/usr/bin/env sh

CATTLE_AGENT_BINARY_BASE_URL="https://rancher.example.com/assets"
CATTLE_SERVER=https://rancher.example.com



#!/bin/sh

if [ "${DEBUG}" = 1 ]; then
    set -x
    CURL_LOG="-v"
else
    CURL_LOG="-sS"
fi

# Usage:
#   curl ... | ENV_VAR=... sh -
#       or
#   ENV_VAR=... ./install.sh
#
[…]

Having double (and different) shebangs smells like a bug. I don't know that it does something strange, but I think it's worth taking a look at before it does. 🙃

I don't know if this Issue belongs here or over at https://github.com/rancher/rancher/ – just tell me and I'll repost it.