fixes issue #536 (#540)

.goreleaser.yml

 env:
   - GO111MODULE=on
+  - KUBEBENCH_CFG=/etc/kube-bench/cfg
 builds:
   - main: main.go
     binary: kube-bench
@@ -7,14 +8,21 @@ builds:
       - linux
     goarch:
       - amd64
+    ldflags:
+     - "-X github.com/aquasecurity/kube-bench/cmd.KubeBenchVersion={{.Version}}"
+     - "-X github.com/aquasecurity/kube-bench/cmd.cfgDir={{.Env.KUBEBENCH_CFG}}"
 # Archive customization
 archive:
   format: tar.gz
+  files:
+    - "cfg/**/*"
 nfpm:
   vendor: Aqua Security
   description: "The Kubernetes Bench for Security is a Go application that checks whether Kubernetes is deployed according to security best practices"
   license: Apache-2.0
   homepage: https://github.com/aquasecurity/kube-bench
+  files:
+    "cfg/**/*": "/etc/kube-bench/cfg"
   formats:
     - deb
     - rpm

cmd/root.go

@@ -38,7 +38,7 @@ var (
 	kubeVersion        string
 	benchmarkVersion   string
 	cfgFile            string
-	cfgDir             string
+	cfgDir             = "./cfg/"
 	jsonFmt            bool
 	junitFmt           bool
 	pgSQL              bool
@@ -145,7 +145,7 @@ func init() {
 		`Run all the checks under this comma-delimited list of groups. Example --group="1.1"`,
 	)
 	RootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is ./cfg/config.yaml)")
-	RootCmd.PersistentFlags().StringVarP(&cfgDir, "config-dir", "D", "./cfg/", "config directory")
+	RootCmd.PersistentFlags().StringVarP(&cfgDir, "config-dir", "D", cfgDir, "config directory")
 	RootCmd.PersistentFlags().StringVar(&kubeVersion, "version", "", "Manually specify Kubernetes version, automatically detected if unset")
 	RootCmd.PersistentFlags().StringVar(&benchmarkVersion, "benchmark", "", "Manually specify CIS benchmark version. It would be an error to specify both --version and --benchmark flags")