fix(docker): [testpypi]

Author: OneAndZero24

.docker/Dockerfile

@@ -1,24 +1,31 @@
 # ActivationScope Dockerfile
+# Uses manylinux_2_28 base to produce wheels compatible with Python packaging standards.
+# PyPI rejects bare linux_x86_64 tags; wheels built here get proper manylinux_2_28_x86_64 tags.
 
-# Stage‑0 build args — only visible to FROM lines below.
 ARG PYTHON_VERSION=3.10
+FROM quay.io/pypa/manylinux_2_28_x86_64
 
-FROM python:${PYTHON_VERSION}-slim
-
-# Re‑declare args so they are visible inside the build stage.
+# Re-declare args so they are visible inside the build stage.
 ARG PYTORCH_VERSION=2.5.1
 ARG PLATFORM=cpu
 
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends git g++ build-essential && \
-    rm -rf /var/lib/apt/lists/*
+# manylinux is AlmaLinux 8 (RHEL-family) — use dnf, not apt-get.
+# Copy target Python and pip into /usr/local/bin so bare "python" / "pip" resolve correctly
+# for every subsequent RUN and for the CI wheel-build step on docker run.
+RUN dnf install -y gcc-c++ git && \
+    dnf clean all && \
+    PY="$(echo $PYTHON_VERSION | sed 's/3\.\([0-9]\)/cp3\1-cp3\1/')" && \
+    cp /opt/python/$PY/bin/pip /usr/local/bin/ && \
+    cp /opt/python/$PY/bin/python* /usr/local/bin/ && \
+    pip install --upgrade pip setuptools wheel
 
 WORKDIR /src
 
 # Generate pyproject.toml in-container (it is git-ignored and built dynamically)
 COPY utils/generate-pyproject.py utils/matrix.py ./utils/
 COPY matrix.yml pyproject.toml.template setup.py ./
 RUN pip install --no-cache-dir pyyaml && python utils/generate-pyproject.py
+
 COPY activationscope/ ./activationscope/
 COPY csrc/ ./csrc/