fix/bug: infinite loop non-existent input dir path

Signed-off-by: Guillaume de Rouville <guillaume.derouville@gmail.com>

cmd/dagger/cmd/input/dir.go

@@ -1,6 +1,7 @@
 package input
 
 import (
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -31,6 +32,11 @@ var dirCmd = &cobra.Command{
 			lg.Fatal().Err(err).Str("path", args[1]).Msg("unable to resolve path")
 		}
 
+		// Check that directory exists
+		if _, err := os.Stat(p); os.IsNotExist(err) {
+			lg.Fatal().Err(err).Str("path", args[1]).Msg("dir doesn't exists")
+		}
+
 		workspace := common.CurrentWorkspace(ctx)
 		if !strings.HasPrefix(p, workspace.Path) {
 			lg.Fatal().Err(err).Str("path", args[1]).Msg("dir is outside the workspace")