Add option to provide configuration file on command line

cmd/update.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/gogits/gogs/models"
 	"github.com/gogits/gogs/modules/log"
+	"github.com/gogits/gogs/modules/setting"
 )
 
 var CmdUpdate = cli.Command{
@@ -18,10 +19,15 @@ var CmdUpdate = cli.Command{
 	Usage:       "This command should only be called by SSH shell",
 	Description: `Update get pushed info and insert into database`,
 	Action:      runUpdate,
-	Flags:       []cli.Flag{},
+	Flags: []cli.Flag{
+		cli.StringFlag{"config, c", "custom/conf/app.ini", "Configuration file", ""},
+	},
 }
 
 func runUpdate(c *cli.Context) {
+	if c.IsSet("config") {
+		setting.CustomConf = c.String("config")
+	}
 	cmd := os.Getenv("SSH_ORIGINAL_COMMAND")
 	if cmd == "" {
 		return