Docker configure

src/config/sys.config

@@ -4,11 +4,10 @@
     {ws_port, 8081},
     {admin_http_port, 8445},
     {admin_ws_port, 8446},
-    {jwt_secret, <<"my-super-secret-key-for-jwt-32-bytes!">>},
-    {argon2_params, #{t_cost => 2, m_cost => 19, parallelism => 1}}
+    {jwt_secret, <<"${JWT_SECRET:-change_me_in_production}">>}
   ]},
   {mnesia, [
-    {dir, "Mnesia.${NODE}"}
+    {dir, "${MNESIA_DIR:-Mnesia.${NODE}}"}
   ]},
   {kernel, [
     {logger_level, info},