docker 的 django 看不到枕头

Question

我正在尝试在 Django 上部署我的项目。我几乎做到了，但 django 在 docker 容器中看不到已安装的枕头。我确定它已安装 pip 向我发送此消息：

sudo docker-compose -f docker-compose.prod.yml exec web pip install pillow

Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pillow in /usr/local/lib/python3.8/site-packages (8.1.0)

但是当我尝试迁移数据库时，我看到了这个：

ERRORS:
history_main.Exhibit.image: (fields.E210) Cannot use ImageField because Pillow is not installed.
    HINT: Get Pillow at https://pypi.org/project/Pillow/ or run command "python -m pip install 
Pillow".
history_main.MainUser.avatar: (fields.E210) Cannot use ImageField because Pillow is not installed.

以下是 Pillow 尝试安装的 Dockerfile 部分：

RUN apk update \
    && apk add postgresql-dev gcc python3-dev musl-dev jpeg-dev zlib-dev build-base 
RUN pip install --upgrade pip
COPY ./req.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /usr/src/app/wheels -r req.txt

...

RUN apk update && apk add libpq
COPY --from=builder /usr/src/app/wheels /wheels
COPY --from=builder /usr/src/app/req.txt .
RUN pip install --no-cache /wheels/*

docker-撰写：

version: '3.7'

services:
  web:
    build:
      context: ./app
      dockerfile: Dockerfile.prod
    command: gunicorn hello_django.wsgi:application --bind 0.0.0.0:8000
    volumes:
      - static_volume:/home/app/web/staticfiles
      - media_volume:/home/app/web/mediafiles
    expose:
      - 8000
    env_file:
      - ./.env.prod
    depends_on:
      - db
  db:
    image: postgres:12.0-alpine
    volumes:
      - postgres_data:/var/lib/postgresql/data/
    env_file:
      - ./.env.prod.db
  nginx:
    build: ./nginx
    volumes:
      - static_volume:/home/app/web/staticfiles
      - media_volume:/home/app/web/mediafiles
    ports:
      - 1337:80
    depends_on:
      - web
  volumes:
   postgres_data:
   static_volume:
   media_volume:

docker网络文件：

###########
# BUILDER #
###########

# pull official base image
FROM python:3.8.3-alpine as builder

# set work directory
WORKDIR /usr/src/app

# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# install psycopg2 dependencies
RUN apk update \
    && apk add postgresql-dev gcc python3-dev musl-dev

# lint
RUN pip install --upgrade pip
RUN pip install flake8
COPY . .
RUN flake8 --ignore=E501,F401 .

# install dependencies
COPY ./req.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /usr/src/app/wheels -r req.txt


#########
# FINAL #
#########

# pull official base image
FROM python:3.8.3-alpine

# create directory for the app user
RUN mkdir -p /home/app

# create the app user
RUN addgroup -S app && adduser -S app -G app

# create the appropriate directories
ENV HOME=/home/app
ENV APP_HOME=/home/app/web
RUN mkdir $APP_HOME
WORKDIR $APP_HOME

# install dependencies
RUN apk update && apk add libpq
COPY --from=builder /usr/src/app/wheels /wheels
COPY --from=builder /usr/src/app/req.txt .
RUN pip install --no-cache /wheels/*

# copy entrypoint-prod.sh
COPY ./entrypoint.prod.sh $APP_HOME

# copy project
COPY . $APP_HOME

# chown all the files to the app user
RUN chown -R app:app $APP_HOME

# change to the app user
USER app

# run entrypoint.prod.sh
ENTRYPOINT ["/home/app/web/entrypoint.prod.sh"]

Answer 1

通过将 models.py 文件中的 ImageField 替换为 FileField 解决了这个问题

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