Implemented subpath support

config/config.go

@@ -3,18 +3,25 @@ package config
 import (
 	"github.com/joho/godotenv"
 	"os"
+	"path"
 )
 
+type pageBase struct {
+	BasePath string
+}
+
+var PageBase pageBase
+
 var (
 	ArticleRoot string
 
+	ServerURL  string
 	ServerPort string
 
 	Prefix string
 
-	DatabaseFile    string
-	ArticleTemplate string
-	FrontendDir     string
+	DatabaseFile string
+	FrontendDir  string
 )
 
 func init() {
@@ -22,11 +29,15 @@ func init() {
 
 	ArticleRoot = os.Getenv("ARTICLE_ROOT")
 
+	ServerURL = os.Getenv("SERVER_URL")
 	ServerPort = os.Getenv("SERVER_PORT")
 
 	Prefix = os.Getenv("PREFIX")
 
 	DatabaseFile = os.Getenv("DATABASE_FILE")
-	ArticleTemplate = os.Getenv("ARTICLE_TEMPLATE")
 	FrontendDir = os.Getenv("FRONTEND_DIR")
+
+	PageBase = pageBase{
+		BasePath: path.Join(ServerURL, Prefix),
+	}
 }