[#59] 🐛 Install mustache 빌드 에러 해결 (#71)

* [#59] 🔧 update git-push.yml file

* [#59] 🔧 update build.sh file

* [#59] 🐛 add sudo keyword to permit write access

Author: KingNono1030

.github/workflows/git-push.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Install mustache (to update the date)
-        run: sudo apt update && sudo apt install -y ruby && gem install mustache
+        run: sudo apt update && sudo apt install -y ruby && sudo gem install mustache
 
       - name: Creates output
         run: sh ./build.sh