$ /build/build.sh Building Heroku-based application using gliderlabs/herokuish docker image... Attempting to pull a previously built image for use with --cache-from... invalid reference format invalid reference format No previously cached image found. The docker build will proceed without using a cached image invalid argument "/master:552eab758c00f801d25463f0840a4b1dfc4f7492" for "-t, --tag" flag: invalid reference format See 'docker build --help'. ERROR: Job failed: exit code 1
npm ERR! npm ERR! Failed at the email@example.com lint:js script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in: npm ERR! /app/.npm/_logs/2020-10-07T09_38_13_072Z-debug.log ERROR: "lint:js" exited with 1. npm ERR! Test failed. See above for more details. ERROR: Job failed: exit code 1