Improved dependency management and checkpoint handling

Dockerfile

@@ -12,11 +12,9 @@ WORKDIR /piper
 RUN apt-get update \
  && apt-get install -y --no-install-recommends \
       build-essential \
-      cmake \
       espeak-ng \
       git \
       ninja-build \
-      pkg-config \
       python3 \
       python3-dev \
       python3-venv \
@@ -27,8 +25,16 @@ RUN git clone --depth 1 https://github.com/OHF-voice/piper1-gpl.git .
 RUN python3 -m venv ${VENV_PATH}
 
 RUN pip install --upgrade pip wheel setuptools \
- && pip install --no-cache-dir cmake scikit-build \
- && pip install --no-cache-dir -e '.[train]'
+ && pip install --no-cache-dir numpy cython cmake scikit-build onnx onnxruntime-gpu
+
+RUN echo "torch==2.4.*" > /tmp/constraints.txt \
+ && echo "torchvision==0.19.*" >> /tmp/constraints.txt \
+ && echo "torchaudio==2.4.*" >> /tmp/constraints.txt
+
+RUN pip install --no-cache-dir torch==2.4.* torchvision==0.19.* torchaudio==2.4.* \
+    --index-url https://download.pytorch.org/whl/cu121
+
+RUN pip install --no-cache-dir -e '.[train]' -c /tmp/constraints.txt
 
 RUN ./build_monotonic_align.sh \
  && python3 setup.py build_ext --inplace