Checking out e7632e79 as master...Skipping Git submodules setup$ if [[ -z "$CI_COMMIT_TAG" ]]; then # collapsed multi-line command$ /build/build.shBuilding Heroku-based application using gliderlabs/herokuish docker image...invalid argument "/master:e7632e798b5cb0a37fdaf9a37cc037b278b79bc7" for "-t, --tag" flag: invalid reference formatSee 'docker build --help'.ERROR: Job failed: exit code 1