Bash Script Multiple Parameters

1#!/bin/sh
2if [ "$1" == "--version" ] & [ ! -z "$2" ]
3then
4    echo "Version received"
5    echo "Will push to"
6    dockerhub="claudiotx/hutbot:"$2
7    echo $dockerhub
8    # docker tag hutbot $dockerhub
9    # docker push $dockerhub
10else
11    echo "Please specify version. Example: '--version 0.1'"
12fi