Add build version reporting

internal/cli/run.go

@@ -16,6 +16,7 @@ import (
 	"strings"
 	"time"
 
+	"gitea.maximumdirect.net/eric/notarius/internal/buildinfo"
 	"gitea.maximumdirect.net/eric/notarius/internal/core/artifacts"
 	"gitea.maximumdirect.net/eric/notarius/internal/core/config"
 	"gitea.maximumdirect.net/eric/notarius/internal/core/debugbundle"
@@ -31,6 +32,7 @@ import (
 const defaultConfigPath = "/usr/local/etc/notarius/config.yml"
 const usage = `Usage:
   notarius help
+  notarius --version
   notarius run <pipeline-id> --input path/to/source.json [--json] [flags]
   notarius config validate --config path/to/config.yml [--pipeline pipeline-id] [--only lane-a,lane-b]
   notarius pipelines list --config path/to/config.yml [--json]
@@ -62,6 +64,20 @@ func Run(args []string, stdout, stderr io.Writer) int {
 }
 
 func RunWithOptions(args []string, stdout, stderr io.Writer, opts Options) int {
+	if len(args) > 0 && args[0] == "--version" {
+		if len(args) != 1 {
+			fmt.Fprintln(stderr, "notarius: --version does not accept arguments")
+			return 2
+		}
+		version, err := buildinfo.Version()
+		if err != nil {
+			fmt.Fprintf(stderr, "notarius: %v\n", err)
+			return 1
+		}
+		fmt.Fprintf(stdout, "notarius %s\n", version)
+		return 0
+	}
+
 	var err error
 	opts, err = normalizeOptions(opts)
 	if err != nil {