Dockerfile Alpine Python Pillow

Dockerfile

FROM python:3.12-alpine

# Python specific settings
# sends output directly to terminal
# https://docs.python.org/3/using/cmdline.html#cmdoption-u
ENV PYTHONUNBUFFERED=1

# Python packages build dependencies
RUN apk add --no-cache --virtual .build-dependencies \
    # Essentials
    gcc musl-dev openssl-dev \
    # Postgres python client (psycopg2) build dependency
    postgresql-dev \
    # Pillow / PIL build dependencies
    freetype-dev jpeg-dev libwebp-dev tiff-dev libpng-dev lcms2-dev \
    openjpeg-dev zlib-dev libxslt-dev libxml2-dev libffi-dev \
    # Python packages run dependencies
    && apk add --no-cache \
    # Pillow / PIL
    freetype jpeg libwebp tiff libpng lcms2 openjpeg zlib libxslt libxml2 libffi 

# Install pillow / Remove build dependencies and leave only the "run dependencies"
RUN pip install pillow && apk del .build-dependencies