Default to $MNT for db path

config/config.go

@@ -4,6 +4,7 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"path"
 	"strings"
 )
 
@@ -17,7 +18,7 @@ type Config struct {
 
 func New() *Config {
 	lookups := make(map[string]*string)
-	add(cdbpath, "./db", lookups)
+	add(cdbpath, path.Join(os.Getenv("MNT"), "db.db"), lookups)
 	add(port, ":9101", lookups)
 	flag.Parse()
 	return &Config{