ci: use SSH key mounted directly in runner container instead of secret

.gitea/workflows/build.yml

@@ -54,13 +54,11 @@ jobs:
         run: |
           apk add --no-cache openssh-client
 
-          # Installer la clé privée SSH
-          mkdir -p ~/.ssh
-          echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_ed25519
-          chmod 600 ~/.ssh/id_ed25519
-          ssh-keyscan -H 192.168.1.39 >> ~/.ssh/known_hosts
+          # Clé montée directement dans le runner via volume Docker
+          chmod 600 /root/.ssh/id_ed25519
+          ssh-keyscan -H 192.168.1.39 >> /root/.ssh/known_hosts
 
-          SSH="ssh -i ~/.ssh/id_ed25519 -o StrictHostKeyChecking=no Stude12@192.168.1.39"
+          SSH="ssh -i /root/.ssh/id_ed25519 -o StrictHostKeyChecking=no Stude12@192.168.1.39"
 
           # Copier docker-compose.prod.yml sur le NAS
           cat docker-compose.prod.yml | $SSH \