Now shows commit id + version

backend/Makefile

@@ -3,4 +3,8 @@
 export
 
 start:
-	go run main.go
+	go run main.go
+
+# Add or modify a build target
+build:
+	go build -ldflags "-X main.version=$(shell git describe --tags) -X main.commitID=#$(shell git rev-parse --short HEAD)" -o digger cli/cmd/digger/main.go

cli/cmd/digger/main.go

@@ -15,6 +15,12 @@ import (
 	"github.com/diggerhq/digger/libs/storage"
 	"log"
 	"os"
+	"github.com/spf13/cobra"
+)
+
+var (
+    version  = "dev"
+    commitID = "unknown"
 )
 
 func exec(actor string, projectName string, repoNamespace string, command string, prNumber int, lock core_locking.Lock, policyChecker core_policy.Checker, prService ci.PullRequestService, orgService ci.OrgService, reporter reporting.Reporter, backendApi core_backend.Api) {
@@ -75,6 +81,15 @@ func main() {
 		usage.ReportErrorAndExit("", fmt.Sprintf("Error occured during command exec: %v", err), 8)
 	}
 
+	fmt.Printf("Running digger %s (commit: %s)\n", version, commitID)
+	versionCmd := &cobra.Command{
+		Use:   "version",
+		Short: "Print the version number of Digger",
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Printf("Running digger %s (commit: %s)\n", version, commitID)
+		},
+	}
+	rootCmd.AddCommand(versionCmd)
 }
 
 func getImpactedProjectsAsString(projects []digger_config.Project, prNumber int) string {

cli/cmd/digger/main_test.go

@@ -24,6 +24,10 @@ import (
 	"github.com/davecgh/go-spew/spew"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"bytes"
+	"fmt"
+	"io"
+	"os"
 )
 
 var githubContextNewPullRequestJson = `{
@@ -1029,3 +1033,29 @@ func TestGitHubTestPRCommandCaseInsensitivity(t *testing.T) {
 	assert.Equal(t, "digger plan", jobs[0].Commands[0])
 	assert.NoError(t, err)
 }
+func TestVersionPrinting(t *testing.T) {
+	// Save the original os.Stdout
+	oldStdout := os.Stdout
+
+	// Create a pipe to capture the output
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	// Call the main function (this will print the version)
+	main()
+
+	// Close the write end of the pipe to flush it
+	w.Close()
+
+	// Restore the original stdout
+	os.Stdout = oldStdout
+
+	// Read the captured output
+	var buf bytes.Buffer
+	io.Copy(&buf, r)
+	output := buf.String()
+
+	// Check if the output contains the version information
+	assert.Contains(t, output, "Running digger")
+	assert.Contains(t, output, "commit:")
+}