👷ci: GitHub Actions SSH 경로 오류 수정

Author: codewith-MJ

.github/workflows/deploy.yml

@@ -14,11 +14,12 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup SSH
+        shell: bash
         run: |
-          mkdir -p ~/.ssh
-          echo "${{ secrets.EC2_SSH_KEY }}" > ~/.ssh/id_rsa
-          chmod 600 ~/.ssh/id_rsa
-          ssh-keyscan -H ${{ secrets.EC2_HOST }} >> ~/.ssh/known_hosts
+          mkdir -p "$HOME/.ssh"
+          echo "${{ secrets.EC2_SSH_KEY }}" > "$HOME/.ssh/id_rsa"
+          chmod 600 "$HOME/.ssh/id_rsa"
+          ssh-keyscan -H ${{ secrets.EC2_HOST }} >> "$HOME/.ssh/known_hosts"
 
       - name: Deploy to EC2
         run: |