Imagemagick / MagickWand under alpine linux / python-alpine

The python implemention of MagickWand, aptly named Wand, requires ImageMagick and MagickWand installed. While building docker images using the python:alpine base images, these dependencies can be installed through:

ENV MAGICK_HOME=/usr
RUN apk add --no-cache imagemagick && \
apk add --no-cache imagemagick-dev

The first one is required for Wand to find the installed MagickWand libraries, while the second installs the imagickmagick development dependencies (and thus, the magickwand shared library).