docker_pull() {
  repo=<%= data[:repo] %>
  tag=<%= data[:tag] %>
  docker pull $repo:$tag
}

worked=1
for attempt in {1..200}; do
  [[ $worked != 0 ]] || break
  docker_pull && worked=0 || (log "fetch: attempt $attempt failed, sleeping 30"; sleep 30)
done
[[ $worked != 0 ]] && fatal "failed to import image"
log "fetch: successfully imported image"