Improve code

Author: jesusfcr

pkg/checktypes/code.go

@@ -60,12 +60,17 @@ func (c Code) Build(debug bool, logger log.Logger) (string, error) {
 		return "", err
 	}
 	dockerfile := "Dockerfile"
+
+	// In case of debug, we need to add the delve debugger to the image.
+	// We create a new Dockerfile with the necessary changes.
+	// The original Dockerfile is kept in the dir but excluded from the Tar file.
+	// The new Dockerfile is removed after the image is built.
 	if debug {
 		b, err := os.ReadFile(path.Join(dir, "Dockerfile"))
 		if err != nil {
 			return "", err
 		}
-		dockerfile = "Dockerfile.local"
+		dockerfile = "Dockerfile.debug"
 		add := fmt.Sprintf(`
 		RUN apk add --no-cache go
 		RUN go install github.com/go-delve/delve/cmd/dlv@latest
@@ -82,7 +87,7 @@ func (c Code) Build(debug bool, logger log.Logger) (string, error) {
 	defer func() {
 		if dockerfile != "Dockerfile" {
 			if err := os.Remove(path.Join(dir, dockerfile)); err != nil {
-				logger.Errorf("error removing Dockerfile.vulcan-local: %v", err)
+				logger.Errorf("error removing %s: %v", dockerfile, err)
 			}
 		}
 	}()