fix: print error messages in mergeYaml

Author: kamushadenes

cmd/docker-sync/cmd/mergeYaml.go

@@ -46,7 +46,7 @@ var mergeYamlCmd = &cobra.Command{
 		if outFile == "" {
 			fmt.Println(string(config))
 		} else {
-			if err := os.WriteFile(outFile, config, 0644); err != nil {
+			if err := os.WriteFile(outFile, config, 0o644); err != nil {
 				cmd.Annotations["error"] = err.Error()
 				return
 			}
@@ -56,6 +56,7 @@ var mergeYamlCmd = &cobra.Command{
 		// Wait for a second to allow for any pending log messages to be flushed
 		time.Sleep(1 * time.Second)
 		if cmd.Annotations["error"] != "" {
+			fmt.Printf("Error: %s\n", cmd.Annotations["error"])
 			os.Exit(1)
 		}
 	},

entrypoint.sh

@@ -3,6 +3,10 @@
 # check if /config.yaml exists
 if [ ! -f /config.yaml ]; then
   /docker-sync mergeYaml -o /config.yaml -f /config_map.yaml -f /secret.yaml
+  if [ $? -ne 0 ]; then
+    echo "Error merging YAML files. Exiting."
+    exit 1
+  fi
 fi
 
 /docker-sync "$@"