diff --git a/Dockerfile b/Dockerfile
index c61916c..38de606 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,11 +16,6 @@ COPY . /usr/src/app
 
 RUN printf "NEXT_PUBLIC_COMMIT_HASH=$(git rev-parse HEAD)\nNEXT_PUBLIC_BRANCH=$(git branch | sed -n -e 's/^\* \(.*\)/\1/p')" > .env.local
 
-# secret.json
-
-RUN echo "{\"tester\": \"${TESTER_KEY}\"}" > secret.json
-
-
 # Building app
 RUN yarn build
 
diff --git a/pages/_app.tsx b/pages/_app.tsx
index 49637c9..d5ce3b2 100644
--- a/pages/_app.tsx
+++ b/pages/_app.tsx
@@ -9,8 +9,6 @@ const Navbar = dynamic(()=> import('@components/Navbar'))
 
 import Crypto from 'crypto'
 
-import secret from '../secret.json'
-
 import 'core-js/es/promise'
 import 'core-js/es/set'
 import 'core-js/es/map'
@@ -65,7 +63,7 @@ export default function App({ Component, pageProps }: AppProps): JSX.Element {
 			<Navbar />
 			<div className='iu-is-the-best h-full text-black dark:text-gray-100 dark:bg-discord-dark bg-white'>
 				{
-					secret.tester === Crypto.createHmac('sha256', betaKey ?? '').digest('hex') ? <Component {...pageProps} /> : <div className='text-center py-40 px-10'>
+					process.env.NEXT_PUBLIC_TESTER_KEY === Crypto.createHmac('sha256', betaKey ?? '').digest('hex') ? <Component {...pageProps} /> : <div className='text-center py-40 px-10'>
 						<h1 className='text-3xl font-bold'>주어진 테스터키를 입력해주세요.</h1><br/>
 						<input value={betaKey} name='field_name' className='text-black border outline-none px-4 py-2 rounded-2xl' type='text' placeholder='테스터 키' onChange={(e)=> { localStorage.setItem('betaKey', e.target.value); setBetaKey(e.target.value) }} />
 					</div>