Configure a credential helper to remove this warning. See https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Building Heroku-based application using gliderlabs/herokuish docker image... Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running? Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running? Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running?
section_end:1632724164:step_script
section_start:1632724164:cleanup_file_variables
Cleaning up file based variables
section_end:1632724165:cleanup_file_variables
ERROR: Job failed: command terminated with exit code 1