"The headers or library files could not be found for jpeg" installing Pillow on Alpine Linux
This worked for me
sudo apt-get install libjpeg-dev zlib1g-devpip install Pillow
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:alpineRUN apk --update add libxml2-dev libxslt-dev libffi-dev gcc musl-dev libgcc openssl-dev curlRUN apk add jpeg-dev zlib-dev freetype-dev lcms2-dev openjpeg-dev tiff-dev tk-dev tcl-devRUN pip install PillowNow it builds successfully.
I ran into this problem with docker image python:3.6-alpine I solved it by adding these packages apk add jpeg-dev zlib-dev.