fix(CD): add ssh to git pull command

.github/workflows/deploy.yml

@@ -10,10 +10,6 @@ jobs:
     runs-on: ubuntu-latest # The runner environment for this job
 
     steps:
-      - name: Setup ssh key
-        uses: webfactory/ssh-agent@v0.9.0
-        with:
-          ssh-private-key: ${{ secrets.GIT_SSH_PRIVATE_KEY }}
       - name: Deploy via ssh
         uses: appleboy/ssh-action@v1.0.3
         with:
@@ -21,8 +17,7 @@ jobs:
           username: ${{ secrets.SSH_USER }}
           key: ${{ secrets.SSH_PRIVATE_KEY }}
           script: |
-            source ~/.bashrc
             cd ~/cover-letter
-            git pull 
+            GIT_SSH_COMMAND='ssh -i ~/.ssh/github' git pull
             sudo docker compose down
             sudo docker compose up -d --build