test: change dot cmd for CI build

cmd/cmd_util/file.go

@@ -2,6 +2,7 @@ package cmd_util
 
 import (
 	"encoding/json"
+	"fmt"
 	"github.com/phodal/coca/config"
 	"github.com/phodal/coca/core/models"
 	"github.com/phodal/coca/core/support"
@@ -24,7 +25,7 @@ func ConvertToSvg(name string) {
 	cmd := exec.Command("dot", []string{"-Tsvg", config.CocaConfig.ReporterPath + "/" + name + ".dot", "-o", config.CocaConfig.ReporterPath + "/" + name + ".svg"}...)
 	_, err := cmd.CombinedOutput()
 	if err != nil {
-		log.Fatalf("cmd.Run() failed with %s\n", err)
+		fmt.Println("cmd.Run() failed with %s\n", err)
 	}
 }