[Feature] Docker build should also provide multi-arch cache for Python

[chicco785]

Is your feature request related to a problem? Please describe the problem.

Python docker builds are slow

Describe the solution you'd like

Set-up multi-arch build cache for python images

Additional context

No response

[chicco785]

      - name: Poetry Build Cache
        id: cache-poetry
        if: ${{ inputs.language-cache == 'python' }}
        uses: actions/cache@v4
        with:
          path: |
            poetry-cache-amd64
            poetry-cache-arm64
            pip-cache-amd64
            pip-cache-arm64
          key: ${{ runner.os }}-poetry-build-cache-${{ hashFiles('**/poetry.lock') }}

      - name: Inject Python cache into Docker
        if: ${{ inputs.language-cache == 'python' }}
        uses: reproducible-containers/buildkit-cache-dance/inject@v3.3.0
        with:
          cache-map: |
            {
              "poetry-cache-amd64": "/root/.cache/pypoetry-amd64",
              "poetry-cache-arm64": "/root/.cache/pypoetry-arm64",
              "pip-cache-amd64": "/root/.cache/pip-amd64",
              "pip-cache-arm64": "/root/.cache/pip-arm64"
            }
          skip-extraction: ${{ steps.cache-poetry.outputs.cache-hit }}

then something like:

RUN --mount=type=cache,target=/root/.cache/pypoetry-${TARGETARCH} \
    --mount=type=cache,target=/root/.cache/pip-${TARGETARCH} \
    poetry install --no-interaction --no-root