“The headers or library files could not be found for jpeg” installing Pillow on Alpine Linux

Question

I\'m trying to run Python\'s Scrapy in a Docker container based on python:alpine. It was working before, but now I\'d like to use Scrapy\'s Image Pipeline which requires me to i

Answer 1

In short, this helps:

RUN apt-get update -qq && apt-get install -y build-essential libsqlite3-dev \
  libpng-dev libjpeg-dev

---

Detailed:

I have the same error with python:3.8-slim-buster image. Solution presented by @pierangelo-orizio worked for me, but I just cleaned it to a minimal required packages list. So here are my Dockerfile:

FROM python:3.8-slim-buster

RUN apt-get update -qq && apt-get install -y build-essential libsqlite3-dev \
    libpng-dev libjpeg-dev

COPY requirements.txt .
RUN pip install --upgrade pip
RUN pip install -r requirements.txt

EXPOSE 8000
VOLUME /usr/src/app
WORKDIR /usr/src/app
CMD python manage.py runserver 0.0.0.0:8000

And requirements.txt:

Django>=2.1,<2.2
wagtail>=2.4,<2.5
django-cors-headers==2.5.3
python-dotenv==0.10.3