Hide authentication key

 node_modules/
 package-lock.json
+.env
\ No newline at end of file

@@ -14,6 +14,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "dotenv": "^16.0.1",
     "ejs": "^3.1.8",
     "express": "^4.18.1",
     "request": "^2.88.2",

@@ -3,6 +3,7 @@ const app = express();
 const request = require("request");
 const xml2js = require("xml2js");
 const static = require("serve-static");
+require("dotenv").config();
 
 // Modify the values as needed
 var year = "2022";
@@ -10,8 +11,7 @@ var month = "09";
 var operation = "getRestDeInfo";
 
 // Do not modify the values
-var SERVEICE_KEY =
-  "qBtJy2Prw8CCnAiijUM7VkuaA9MZozHuiQI4FbEGYdUDPz4%2FM%2FuxegGjNBWK0aWQHvSslVHwIZQwNWh57WgRTA%3D%3D";
+var SERVEICE_KEY = process.env.API_KEY;
 var url = "http://apis.data.go.kr/B090041/openapi/service/SpcdeInfoService/";
 var queryParams = "?" + "solYear" + "=" + year;
 queryParams += "&" + "solMonth" + "=" + month;