If your workstation and your Dockerfile have different archs

Dockerfile

FROM python:slim

COPY wheelhouse/* wheelhouse/

RUN pip install wheelhouse/*

wheelhouse.sh

#!/usr/bin/env bash
set -euf -o pipefail

# --------------------------------------------------------------------------- #
# Build a debian wheelhouse so that `docker build .` works                    #
#                                                                             #
# This is only necessary if this project 1) has dependencies with             #
# arch-specific requirements (the c-headers of numpy are a usual suspect)     #
# and 2) it needs to be deployed with a debian based docker container.        #
# In that case, local tests with docker need to build the right wheelhouse    #
# first, which is what this script does.                                      #
# --------------------------------------------------------------------------- #

# get location of project root
PROJECT_DIR="$(dirname "$(dirname "$(readlink -f "${0}")")")"

# store dockerfile in temp dir
echo "Creating temporary workspace and writing Dockerfile..."
TMP=$(mktemp -d)
trap "{ rm -rf ${TMP}; }" EXIT
cat << EOF > ${TMP}/Dockerfile
FROM python:slim

COPY src src
COPY README.rst .
COPY pyproject.toml .

RUN apt-get update && apt-get install -y gcc make
RUN pip install poetry && \
    poetry lock && \
    poetry build -f wheel && \
    poetry export -f requirements.txt --without-hashes > requirements.txt && \
    pip wheel -w wheels -r requirements.txt && \
    mv dist/* wheels
EOF

# build image, run container, and copy wheelhouse to project root on host
echo "Building image..."
docker build -f ${TMP}/Dockerfile -t 'wheelhouse_builder' ${PROJECT_DIR}
echo "Running container..."
docker run --cidfile ${TMP}/wheelhouse.cid 'wheelhouse_builder'
echo "Cleaning up former wheelhouse and copying over new one from container..."
rm -fr ${PROJECT_DIR}/wheelhouse
docker cp $(cat ${TMP}/wheelhouse.cid):/wheels ${PROJECT_DIR}/wheelhouse
echo "Done."