Fix build et actions

docker-compose.yml

@@ -19,7 +19,7 @@ services:
     restart: unless-stopped
 
   backend:
-    build: ./backend
+    image: git.benoitsz.com/benoit/audio-classifier-backend:latest
     container_name: audio_classifier_api
     depends_on:
       postgres:
@@ -38,10 +38,7 @@ services:
     restart: unless-stopped
 
   frontend:
-    build:
-      context: ./frontend
-      args:
-        NEXT_PUBLIC_API_URL: http://localhost:8001
+    image: git.benoitsz.com/benoit/audio-classifier-frontend:latest
     container_name: audio_classifier_ui
     environment:
       # Use localhost:8001 because the browser (client-side) needs to access the API