Run command "vuls flags -v" cannot get vuls version

[wangxiaorou92]

What did you do? (required. The issue will be closed when not provided.)

Query vuls version

What did you expect to happen?

Run command "vuls flags -v" can get vuls version

What happened instead?

• Current Output
  [root@localhost ~]# vuls flags
  -v Show version
  [root@localhost ~]# echo $?
  0
  [root@localhost ~]# vuls flags -v
  flag provided but not defined: -v
  flags []:
  With an argument, print all flags of . Else,
  print a description of all known top-level flags. (The basic
  help information only discusses the most generally important
  top-level flags.)
  [root@localhost ~]# echo $?
  2

Please re-run the command using -debug and provide the output below.

Steps to reproduce the behaviour

vuls flags -v

Configuration (MUST fill this out):

• Go version (go version):
  [root@localhost ~]# go version
  go version go1.16 linux/amd64

• Go environment (go env):
  [root@localhost ~]# go env
  GO111MODULE=""
  GOARCH="amd64"
  GOBIN=""
  GOCACHE="/root/.cache/go-build"
  GOENV="/root/.config/go/env"
  GOEXE=""
  GOFLAGS=""
  GOHOSTARCH="amd64"
  GOHOSTOS="linux"
  GOINSECURE=""
  GOMODCACHE="/root/go/pkg/mod"
  GONOPROXY=".gitlab.com,.gitee.com"
  GONOSUMDB=".gitlab.com,.gitee.com"
  GOOS="linux"
  GOPATH="/root/go"
  GOPRIVATE=".gitlab.com,.gitee.com"
  GOPROXY="https://goproxy.io"
  GOROOT="/usr/local/go"
  GOSUMDB="off"
  GOTMPDIR=""
  GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
  GOVCS=""
  GOVERSION="go1.16"
  GCCGO="gccgo"
  AR="ar"
  CC="gcc"
  CXX="g++"
  CGO_ENABLED="1"
  GOMOD="/dev/null"
  CGO_CFLAGS="-g -O2"
  CGO_CPPFLAGS=""
  CGO_CXXFLAGS="-g -O2"
  CGO_FFLAGS="-g -O2"
  CGO_LDFLAGS="-g -O2"
  PKG_CONFIG="pkg-config"
  GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2753185754=/tmp/go-build -gno-record-gcc-switches"

• Vuls environment:

Hash : ____

To check the commit hash of HEAD
$ vuls -v
[root@localhost ~]# vuls -v
vuls-v0.18.1-build-20211117_090336_ffdb789

or

$ cd $GOPATH/src/github.com/future-architect/vuls
$ git rev-parse --short HEAD

[root@localhost vuls]# git rev-parse --short HEAD
ffdb789

• config.toml:

• command: