Option to disable image proxy checker

config/Environment Variables.go

@@ -108,6 +108,7 @@ var EnvList []*EnvVar = []*EnvVar{
 		// **Required**: No
 		//
 		// The interval in minutes between proxy checks. Defaults to 480 minutes (8 hours) if not set.
+		// You can disable this by setting the value to 0. Then, proxies will only be checked once at server initialization.
 	},
 }
 

config/proxy_checker.go

@@ -34,7 +34,12 @@ func StartProxyChecker() {
 				return
 			default:
 				checkProxies()
-				time.Sleep(GlobalServerConfig.ProxyCheckInterval)
+				if t := GlobalServerConfig.ProxyCheckInterval; t > 0 {
+					time.Sleep(t)
+				} else {
+					log.Println("Proxy check interval set to 0, disabling auto-check from now on.")
+					select {} // Sweet dreams!
+				}
 			}
 		}
 	}()