Etape 3 + refonte visuelle + corrections etape 2

backend/docker-compose-sandbox.yml

@@ -0,0 +1,17 @@
+services:
+  arc-sandbox:
+    build:
+      context: ./app/sandbox
+      dockerfile: Dockerfile.qa
+    image: arc-sandbox-tools:latest
+    container_name: arc-sandbox
+    ports:
+      - "8004:8004"
+    volumes:
+      - ./temp_repos:/src:rw
+    networks:
+      - arc-network
+
+networks:
+  arc-network:
+    external: true