fix fetch http config file not parse env

internal/app/task.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"log"
+	"os"
 	"sync"
 
 	"github.com/zu1k/proxypool/config"
@@ -70,5 +71,14 @@ func FetchNewConfigFileThenInit() {
 	if err != nil {
 		return
 	}
+	if domain := os.Getenv("DOMAIN"); domain != "" {
+		config.SourceConfig.Domain = domain
+	}
+	if cfEmail := os.Getenv("CF_API_EMAIL"); cfEmail != "" {
+		config.SourceConfig.CFEmail = cfEmail
+	}
+	if cfKey := os.Getenv("CF_API_KEY"); cfKey != "" {
+		config.SourceConfig.CFKey = cfKey
+	}
 	InitGetters(config.SourceConfig.Sources)
 }