update deployment workflow

Author: EleanorWho

.github/workflows/backend_ci.yml

@@ -93,5 +93,10 @@ jobs:
           script: |
             aws ecr get-login-password --region ${{ secrets.AWS_REGION }} | \
             docker login --username AWS --password-stdin ${{ secrets.ECR_REPO }}
+
+            echo "Copying Docker config.json to /root/"
+            sudo cp -R ~/.docker /root/
+            sudo chmod -R 777 /root/.docker
+
             docker-compose pull
             docker-compose up -d --force-recreate