direct: bind config to working directory

Use temp /run instance directory for the config
Use ./config.json as default from within the process

systemd/workflow-direct@.service

@@ -9,6 +9,9 @@ EnvironmentFile=-/etc/default/%i/workflow-direct.env
 DynamicUser=yes
 NoNewPrivileges=yes
 ProtectSystem=strict
+RuntimeDirectory=%i
+BindReadOnlyPaths=/etc/default/%i/config.json:%t/%i/config.json
+WorkingDirectory=%t/%i
 
 [Install]
 WantedBy=multi-user.target

workflow-direct/main.go

@@ -501,7 +501,7 @@ func updateConfiguration(configFilename string, orgs *[]string) {
 }
 
 func main() {
-	configFilename := flag.String("config", "", "List of PrjGit")
+	configFilename := flag.String("config", "config.json", "List of PrjGit")
 	giteaUrl := flag.String("gitea-url", "https://src.opensuse.org", "Gitea instance")
 	rabbitUrl := flag.String("url", "amqps://rabbit.opensuse.org", "URL for RabbitMQ instance")
 	flag.BoolVar(&DebugMode, "debug", false, "Extra debugging information")