The command WITH DOCKER RUN --privileged set -e; timeout=$(expr $(date +%!s(MISSING)) + 30); docker run --name mysql --network=host -d -e MYSQL_ROOT_PASSWORD=root "mysql:$MYSQL" --sql_mode="ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION,ANSI_QUOTES" --default-authentication-plugin=mysql_native_password; while ! mysqladmin ping --host=127.0.0.1 --port=3306 --protocol=TCP --silent; do test "$(date +%!s(MISSING))" -le "$timeout" || (echo "timed out waiting for mysql"; exit 1); echo "waiting for mysql"; sleep 1; done; MYSQL_URL=root:[email protected] ECTO_ADAPTER=myxql mix test; did not complete successfully. Exit code 1