Add homebrew installation

packer/provision.json

@@ -54,6 +54,7 @@
         "scripts/add-network-interface-detection.sh",
         "scripts/autologin.sh",
         "scripts/system-update.sh",
+        "scripts/homebrew.sh",
         "scripts/optimize.sh",
         "scripts/shrink.sh"
       ],

scripts/homebrew.sh

+#!/bin/bash
+
+set -eox pipefail
+
+su ${USERNAME} -c "ruby -e \"$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)\" </dev/null"
+su ${USERNAME} -c "brew install curl git"
+
+# changes path setup for all users, puts homebrew first
+sed -e ';^/usr/local;d' -i /etc/paths
+echo -e "/usr/local/bin\n/usr/local/sbin\n$(cat /etc/paths)" > /etc/paths