n=0
while :
do
   docker pull $2 \
    && docker tag $2 $1$3 \
    && docker push $1$3 && break  # substitute your command here
   n=$((n+1))
      if [ $n -ge 10 ]; then
      echo "initialise failed"
      exit 1
   fi
   echo "retrying..$n"
   sleep 5
done