Add runmode env var support and default to prod in Docker

Co-authored-by: hsluoyz <3787410+hsluoyz@users.noreply.github.com>

conf/conf.go

@@ -26,7 +26,7 @@ import (
 
 func init() {
 	// this array contains the beego configuration items that may be modified via env
-	presetConfigItems := []string{"httpport", "appname"}
+	presetConfigItems := []string{"httpport", "appname", "runmode"}
 	for _, key := range presetConfigItems {
 		if value, ok := os.LookupEnv(key); ok {
 			err := web.AppConfig.Set(key, value)

docker-entrypoint.sh

@@ -6,5 +6,8 @@ fi
 if [ -z "${dataSourceName:-}" ]; then
   export dataSourceName="file:casdoor.db?cache=shared"
 fi
+if [ -z "${runmode:-}" ]; then
+  export runmode=prod
+fi
 
 exec /server