From 202095527094d968826eb2045bc57966ba5c10d0 Mon Sep 17 00:00:00 2001
From: Gucheng Wang <nomeguy@qq.com>
Date: Wed, 15 Jun 2022 01:20:00 +0800
Subject: [PATCH] Fix cannot support old Docker version bug, revert PR:
 https://github.com/casdoor/casdoor/pull/606

---
 conf/conf.go       | 8 +++++++-
 docker-compose.yml | 2 --
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/conf/conf.go b/conf/conf.go
index 7ef49917..7088c676 100644
--- a/conf/conf.go
+++ b/conf/conf.go
@@ -17,6 +17,7 @@ package conf
 import (
 	"fmt"
 	"os"
+	"runtime"
 	"strconv"
 	"strings"
 
@@ -61,7 +62,12 @@ func GetBeegoConfDataSourceName() string {
 
 	runningInDocker := os.Getenv("RUNNING_IN_DOCKER")
 	if runningInDocker == "true" {
-		dataSourceName = strings.ReplaceAll(dataSourceName, "localhost", "host.docker.internal")
+		// https://stackoverflow.com/questions/48546124/what-is-linux-equivalent-of-host-docker-internal
+		if runtime.GOOS == "linux" {
+			dataSourceName = strings.ReplaceAll(dataSourceName, "localhost", "172.17.0.1")
+		} else {
+			dataSourceName = strings.ReplaceAll(dataSourceName, "localhost", "host.docker.internal")
+		}
 	}
 
 	return dataSourceName
diff --git a/docker-compose.yml b/docker-compose.yml
index 0f27fb26..69ebf2d6 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,8 +12,6 @@ services:
       - db
     environment:
       RUNNING_IN_DOCKER: "true"
-    extra_hosts:
-      - "host.docker.internal:host-gateway"
     volumes:
       - ./conf:/conf/
   db: