Revert "Enable debugging"

This reverts commit 743a45e97c894d3f4cb1f4aed5c836e40b8f5f68.
Revert "Remove -o pipefail"

This reverts commit b6890f4245b3c72035c46d5bb772dbe3998c3266.
Revert "Attempt to integrate latest heroku nodejs buildpack"

This reverts commit 7082f4777cd4996291c01ff690b7d2d218e0cc34.
Remove unnecessary noise