Adds the commit sha to the pushed assets
Adds the commit sha to the pushed assets

* This will upload the sha of the docker image containing assets to
  assist with building specific sha builds in the future.
* Addresses: gitlab-org/release/framework#51

mmkassem/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git