Migrate to uv sync and pytest coverage workflow

Dockerfile

@@ -2,13 +2,13 @@ FROM nvidia/cuda:12.4.1-cudnn-devel-ubuntu22.04
 
 ENV DEBIAN_FRONTEND=noninteractive \
     PYTHONUNBUFFERED=1 \
-    PIP_NO_CACHE_DIR=1 \
+    UV_SYSTEM_PYTHON=1 \
+    UV_EXTRA_INDEX_URL=https://download.pytorch.org/whl/cu121 \
     PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True,max_split_size_mb:128
 
 # Base OS tools + media stack + Python toolchain.
 RUN apt-get update && apt-get install -y --no-install-recommends \
     python3.10 \
-    python3-pip \
     python3.10-dev \
     python3.10-venv \
     ffmpeg \
@@ -23,18 +23,17 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     libgl1 \
     && rm -rf /var/lib/apt/lists/* \
     && ln -sf /usr/bin/python3.10 /usr/bin/python \
-    && ln -sf /usr/bin/pip3 /usr/bin/pip \
     && git lfs install
 
+# Install uv.
+COPY --from=ghcr.io/astral-sh/uv:0.6.17 /uv /uvx /usr/local/bin/
+
 WORKDIR /app
 
-# Install project Python dependencies first for better layer caching.
-COPY requirements.txt /app/requirements.txt
+# Install app Python dependencies first for better layer caching.
+COPY pyproject.toml README.md /app/
 
-RUN python -m pip install --upgrade pip setuptools wheel \
-    && pip install --index-url https://download.pytorch.org/whl/cu121 torch torchvision torchaudio \
-    && pip install -r /app/requirements.txt \
-    && pip install -U accelerate safetensors
+RUN uv sync --system --no-dev --no-install-project
 
 # Ensure HunyuanVideo source exists in the image.
 ARG HUNYUAN_REPO=https://github.com/Tencent-Hunyuan/HunyuanVideo-1.5.git
@@ -44,22 +43,23 @@ RUN if [ ! -f /app/HunyuanVideo-1.5/requirements.txt ]; then \
     fi
 
 # Install HunyuanVideo dependencies from upstream README guidance.
-RUN pip install -r /app/HunyuanVideo-1.5/requirements.txt \
-    && pip install --upgrade tencentcloud-sdk-python \
-    && pip install sgl-kernel==0.3.18
+RUN uv pip install --system -r /app/HunyuanVideo-1.5/requirements.txt \
+    && uv pip install --system --upgrade tencentcloud-sdk-python \
+    && uv pip install --system sgl-kernel==0.3.18
 
 # Optional attention backends from Hunyuan docs.
 # Build with: --build-arg INSTALL_OPTIONAL_ATTENTION=1
 ARG INSTALL_OPTIONAL_ATTENTION=0
 RUN if [ "$INSTALL_OPTIONAL_ATTENTION" = "1" ]; then \
-      pip install flash-attn --no-build-isolation && \
+    uv pip install --system flash-attn --no-build-isolation && \
       git clone --depth 1 https://github.com/Tencent-Hunyuan/flex-block-attn.git /tmp/flex-block-attn && \
       cd /tmp/flex-block-attn && git submodule update --init --recursive && python setup.py install && \
       git clone --depth 1 https://github.com/cooper1637/SageAttention.git /tmp/SageAttention && \
       cd /tmp/SageAttention && python setup.py install; \
     fi
 
-COPY . .
+# Copy application source after dependencies are installed.
+COPY . /app
 
 # Default pipeline entrypoint.
 CMD ["python", "run_video_pipeline.py"]