#!/bin/bash
s="dev_CA_1.0.0.car";
#=> dev_CA_6a8zt5d832.car
CI_COMMIT_SHORT_SHA="6a8zt5d832";
sed "s/_[0-9.]\{1,\}\.car$/_${CI_COMMIT_SHORT_SHA}.car/" <<< "$s"
IyEvYmluL2Jhc2gKcz0iZGV2X0NBXzEuMC4wLmNhciI7CiM9PiBkZXZfQ0FfNmE4enQ1ZDgzMi5jYXIKQ0lfQ09NTUlUX1NIT1JUX1NIQT0iNmE4enQ1ZDgzMiI7CnNlZCAicy9fWzAtOS5dXHsxLFx9XC5jYXIkL18ke0NJX0NPTU1JVF9TSE9SVF9TSEF9LmNhci8iIDw8PCAiJHMi