Dockerfile + docker-compose add: add dev sintonia_webapp container

docker-compose.override.yml

@@ -66,6 +66,16 @@ services:
     volumes:
       - ./legacy:/var/www/html
 
+  sintonia-webapp:
+    build:
+      context: .
+      target: sintonia-webapp
+    image: sintonia-webapp
+    container_name: sintonia-webapp
+    working_dir: /var/www/
+    volumes:
+      - libretime_storage:/srv/libretime
+
   nginx:
     volumes:
       - ./legacy:/var/www/html