问"sqlite3.OperationalError:尝试写入只读数据库“即使在chmod 777之后也是如此

EN

RUN chown username db.sqlite3
RUN chmod 777 db.sqlite3

FROM python:3.9.5-alpine

RUN addgroup -S apigroup && adduser -S weatherapi -G apigroup

WORKDIR /app

ADD requirements.txt .

RUN apk update && apk upgrade

RUN python3 -m pip install --upgrade pip && python3 -m pip install --no-cache-dir -r requirements.txt

COPY . . 

USER root
EXPOSE 8000
RUN chmod 777 db.sqlite3

USER weatherapi

RUN python3 manage.py migrate

CMD ["sh", "-c", "python3 manage.py runserver 0.0.0.0:8000"]

version: '3.7'

networks: 
  weather_api_net:
    driver: bridge
    driver_opts:
      com.docker.network.enable_ipv6: "false"
    
services:
  web:
    restart: unless-stopped
    image: weatherapi:1.0
    container_name: weatherapi
    ports:
     - "8000:8000"
    volumes:
     - .:/app
    deploy:
      replicas: 1
      update_config:
        parallelism: 2
        delay: 10s
        order: start-first
      rollback_config:
          parallelism: 2
          delay: 10s
          failure_action: continue
          monitor: 60s
          order: stop-first
      restart_policy:
        condition: on-failure
    networks:
     - weather_api_net