Make app static root persistent between containers

docker/docker-compose.prod.yml

@@ -7,6 +7,7 @@ services:
     volumes:
       - ${PORTAINER_GIT_DIR}:/code
       - ${APP_DATABASE_FILE}:/conf/db.sqlite3
+      - app_static:${STATIC_ROOT}
     #ports:
     # - "8000:8000" # uwsgi socket
     env_file:
@@ -28,6 +29,7 @@ services:
     volumes:
       - ${PORTAINER_GIT_DIR}:/code
       - ${APP_DATABASE_FILE}:/conf/db.sqlite3
+      - app_static:${STATIC_ROOT}
     env_file:
       - ../stack.env
 
@@ -38,6 +40,7 @@ services:
     volumes:
       - ${PORTAINER_GIT_DIR}:/code
       - ${APP_DATABASE_FILE}:/conf/db.sqlite3
+      - app_static:${STATIC_ROOT}
     env_file:
       - ../stack.env
 
@@ -96,5 +99,5 @@ networks:
       external:
          name: xf
 
-# volumes:
-#   redis_data: {}
+volumes:
+  app_static: {}