Added Docker image for older ARMv7 for idf-python-wheels

.github/workflows/build_image_idf_python_wheels copy.yml

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+name: Build and push Docker image 'idf-python-wheels-legacy'
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'idf_python_wheels_legacy/**'
+      - '.github/workflows/build_image_idf_python_wheels_legacy.yml'
+
+  pull_request:
+    paths:
+      - 'idf_python_wheels_legacy/**'
+      - '.github/workflows/build_image_idf_python_wheels_legacy.yml'
+
+env:
+  IMAGE_DIR: ./idf_python_wheels_legacy
+  IMAGE_NAME: ghcr.io/${{ github.repository }}/idf-python-wheels-armv7l-legacy
+  IMAGE_TAG: v1
+  IMAGE_ARCHS: linux/arm
+
+jobs:
+  create-docker-image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GHRC
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{github.actor}}
+          password: ${{secrets.GITHUB_TOKEN}}
+
+      - name: Build and push image
+        uses: docker/build-push-action@v6
+        with:
+          context: ${{env.IMAGE_DIR}}
+          platforms: ${{env.IMAGE_ARCHS}}
+          tags: ${{env.IMAGE_NAME}}:${{env.IMAGE_TAG}}
+          # Push package to registry only when merged to master
+          push: ${{ github.event_name != 'pull_request' }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

idf_python_wheels_legacy/Dockerfile

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+# Minimal manylinux-compatible Docker image for ARMv7l (32-bit ARM)
+# Based on Debian Buster for older glibc compatibility (2.28)
+# Use this for compatibility with older systems (e.g., older Raspberry Pi OS)
+
+FROM arm32v7/debian:buster
+
+LABEL maintainer="Espressif Systems"
+LABEL description="Minimal manylinux-compatible environment for building Python wheels on ARMv7l (legacy glibc 2.28)"
+
+# Set environment variables
+ENV DEBIAN_FRONTEND=noninteractive \
+    LC_ALL=C.UTF-8 \
+    LANG=C.UTF-8
+
+# Buster is EOL - archive repositories
+RUN sed -i 's|deb.debian.org|archive.debian.org|g' /etc/apt/sources.list && \
+    sed -i 's|security.debian.org|archive.debian.org|g' /etc/apt/sources.list && \
+    sed -i '/buster-updates/d' /etc/apt/sources.list
+
+# Install build dependencies and Python versions
+RUN apt-get update && apt-get install -y \
+    # Build essentials
+    build-essential \
+    gcc \
+    g++ \
+    make \
+    cmake \
+    git \
+    wget \
+    curl \
+    ca-certificates \
+    patchelf \
+    # Python build dependencies
+    libssl-dev \
+    libffi-dev \
+    libbz2-dev \
+    libreadline-dev \
+    libsqlite3-dev \
+    libncurses5-dev \
+    libncursesw5-dev \
+    libgdbm-dev \
+    liblzma-dev \
+    tk-dev \
+    zlib1g-dev \
+    # Additional libraries commonly needed for wheels
+    libxml2-dev \
+    libxslt1-dev \
+    libyaml-dev \
+    libglib2.0-dev \
+    # PyGObject dependencies
+    libcairo2-dev \
+    pkg-config \
+    libgirepository1.0-dev \
+    # dbus-python dependencies
+    libdbus-1-dev \
+    libdbus-glib-1-dev \
+    # Pillow dependencies
+    libjpeg-dev \
+    libpng-dev \
+    libtiff-dev \
+    libfreetype6-dev \
+    liblcms2-dev \
+    libwebp-dev \
+    libopenjp2-7-dev \
+    libfribidi-dev \
+    libharfbuzz-dev \
+    libxcb1-dev \
+    libxau-dev \
+    # Python from Debian repos (Buster provides 3.7)
+    python3 \
+    python3-dev \
+    python3-venv \
+    python3-pip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install pip and wheel tools
+RUN python3 -m pip install --no-cache-dir --upgrade \
+    pip \
+    setuptools \
+    wheel \
+    auditwheel
+
+# Set up manylinux platform tag
+# This makes auditwheel recognize the environment as manylinux-compatible
+# Buster has glibc 2.28, so we use manylinux_2_28
+RUN echo "manylinux_2_28_armv7l" > /etc/system-release-cpe
+
+# Create a marker file for manylinux detection
+RUN mkdir -p /opt/python && \
+    echo "manylinux_2_28_armv7l" > /opt/python/PLATFORM
+
+# Set working directory
+WORKDIR /workspace
+
+# Default Python
+ENV PATH="/usr/bin:${PATH}"
+
+CMD ["/bin/bash"]
+