Add blurb

Author: jaraco

Dockerfile

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+# Use AlmaLinux 8, a 1:1 RHEL 8 compatible OS with standard repositories
+FROM almalinux:8
+
+# Set an environment variable to run dnf without prompts
+ENV DNF_ASSUMEYES=1
+
+# Install build dependencies for CPython
+RUN dnf update -y && \
+    # --- FIX STARTS HERE ---
+    # Install the DNF plugins package which provides the 'config-manager' command
+    dnf install -y dnf-plugins-core && \
+    # --- FIX ENDS HERE ---
+    # Enable the 'powertools' repository, which is the AlmaLinux equivalent of CRB
+    dnf config-manager --set-enabled powertools && \
+    # Now, install all the packages
+    dnf install -y \
+    gcc \
+    make \
+    git \
+    findutils \
+    zlib-devel \
+    bzip2-devel \
+    libffi-devel \
+    openssl-devel \
+    readline-devel \
+    sqlite-devel \
+    xz-devel \
+    tk-devel && \
+    # Clean up dnf cache to reduce image size
+    dnf clean all
+
+# Create a non-root user to run the build
+RUN useradd --create-home buildbot
+USER buildbot
+WORKDIR /home/buildbot
+
+# Clone the CPython repository from GitHub
+# We use the 'main' branch, which is what the '3.x' buildbots track.
+# --depth 1 creates a shallow clone to save time and space.
+RUN git clone --branch main --depth 1 https://github.com/python/cpython.git
+
+# Set the working directory for the build
+WORKDIR /home/buildbot/cpython
+
+# Configure and build in a single layer
+# - Uses the exact configure flags from the buildbot: --with-pydebug and --with-lto
+# - make -j$(nproc) builds in parallel using all available CPU cores
+RUN ./configure --with-pydebug --with-lto && \
+    make -j$(nproc)
+
+# Set the environment variable to unlock the failure mode.
+ENV GITHUB_ACTION=fake
+
+CMD ["make", "test"]

Misc/NEWS.d/next/Tests/2025-09-21-16-00-30.gh-issue-138313.lBx2en.rst

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+Restore skipped test and add janky workaround to prevent select buildbots
+from failing with a ResourceWarning.