Shorten and document Docker tweaks for Python and pip

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Benjamin Bach 2024-07-23 13:04:03 +02:00
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FROM python:3.12-slim-bullseye
# PYTHONFAULTHANDLER: Propagate tracebacks from all threads.
# PYTHONUNBUFFERED: Write terminal output straight to docker (to not confuse Docker Compose).
# PYTHONDONTWRITEBYTECODE: Dont write *pyc files at all, making it possible for a 100% read-only container.
# PIP_NO_CACHE_DIR: Disable PIP cache, we don't need pip's cache after building the image.
# PIP_DISABLE_PIP_VERSION_CHECK: Build the image with the available pip, do not check for updates (faster!)
# PIP_DEFAULT_TIMEOUT: Allow for longer timeouts.
ENV PYTHONFAULTHANDLER=1 \
PYTHONUNBUFFERED=1 \
PYTHONDONTWRITEBYTECODE=1 \
PYTHONHASHSEED=random \
PIP_NO_CACHE_DIR=off \
PIP_NO_CACHE_DIR=1 \
PIP_DISABLE_PIP_VERSION_CHECK=on \
PIP_DEFAULT_TIMEOUT=100
ARG BUILD