Fix getting go version

.cicd/build.sh

@@ -4,7 +4,7 @@ set -eox pipefail
 . .cicd/env.sh
 
 build() {
-  ldflags="-X $mod/core.Version=$vers -X $mod/core.BuildTime=$buildTime -X \"$mod/core.GoVersion=$goVersion\""
+  ldflags="-X $mod/core.Version=$vers -X $mod/core.BuildTime=$buildTime"
   docker run --rm \
     -v "$(pwd):/go/src/$mod" \
     -w "/go/src/$mod"  \

.cicd/env.sh

@@ -6,7 +6,6 @@ export mod="github.com/jet/kube-webhook-certgen" #"$(head -n 1 go.mod | cut -f 2
 export rev=$(git rev-parse HEAD)
 export tag=$(git tag --points-at HEAD)
 export buildTime=$(date -u +%FT%TZ)
-export goVersion=$(go version)
 export DOCKER_CLI_EXPERIMENTAL=enabled
 
 # This will break if there are multiple tags set to the same commit, which is what we want

cmd/version.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"fmt"
+	"runtime"
 
 	"github.com/jet/kube-webhook-certgen/core"
 	"github.com/spf13/cobra"
@@ -16,7 +17,7 @@ var version = &cobra.Command{
 func versionCmdRun(cmd *cobra.Command, args []string) {
 	fmt.Printf("%s\n", core.Version)
 	fmt.Printf("build %s\n", core.BuildTime)
-	fmt.Printf("%s\n", core.GoVersion)
+	fmt.Printf("%s\n", runtime.Version())
 }
 
 func init() {

core/version.go

@@ -5,6 +5,4 @@ var (
 	Version = "0.0.1-dev"
 	// BuildTime is the timestamp (ISO-8601) of the build
 	BuildTime = "0001-01-01T00:00:00Z"
-	// GoVersion is the version of Go this was built with
-	GoVersion = "go version unknown"
 )