$ /build/build.sh Logging to GitLab Container Registry with CI credentials... WARNING! Using --password via the CLI is insecure. Use --password-stdin. Building Heroku-based application using gliderlabs/herokuish docker image... Error response from daemon: Get https://registry-1.docker.io/v2/: unauthorized: incorrect username or password invalid argument "/master:c911b89575885cf5dbe61664506d61d7d57ff70d" for "-t, --tag" flag: invalid reference format See 'docker build --help'. invalid reference format ERROR: Job failed: exit code 1