now=$(date +%Y%m%d)
if [ $# -eq 0 ]; then
    echo "镜像名称"
    exit 1
fi
tag=$0
if [ $# -eq 1 ]; then
    echo "请输入版本号"
    exit 1
fi
version=$1

if [ $# -eq 2 ]; then
    echo "请输入版本号"
    filePath=$2
else
    filePath=Dockerfile
fi
docker build -t $tag:$version-$now -f $filePath .