docker-compose/script/build/write-git-sha

#!/bin/bash
#
# Write the current commit sha to the file GITSHA. This file is included in
# packaging so that `docker-compose version` can include the git sha.
# sets to 'unknown' and echoes a message if the command is not successful

DOCKER_COMPOSE_GITSHA="$(git rev-parse --short HEAD)"
if [[ "${?}" != "0" ]]; then
    echo "Couldn't get revision of the git repository. Setting to 'unknown' instead"
    DOCKER_COMPOSE_GITSHA="unknown"
fi
echo "${DOCKER_COMPOSE_GITSHA}"