“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 a comment that appears to have been deleted later, someone pointed me to https://github.com/python-pillow/Pillow/blob/c05099f45c0d94a2a98c3609a96bdb6cf7446627/depends/alpine_Dockerfile. Based on that Dockerfile I modified my own as follows:

FROM python:alpine
RUN apk --update add libxml2-dev libxslt-dev libffi-dev gcc musl-dev libgcc openssl-dev curl
RUN apk add jpeg-dev zlib-dev freetype-dev lcms2-dev openjpeg-dev tiff-dev tk-dev tcl-dev
RUN pip install Pillow

Now it builds successfully.