Create Dockerfile

Dockerfile

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+FROM python:3.10
+
+# 1. Install system dependencies (Git and GL libraries are required)
+RUN apt-get update && apt-get install -y \
+    git \
+    libgl1-mesa-glx \
+    && rm -rf /var/lib/apt/lists/*
+
+# 2. Create a user (Hugging Face Spaces best practice)
+RUN useradd -m -u 1000 user
+USER user
+ENV PATH="/home/user/.local/bin:$PATH"
+
+# 3. Install Torch and Torchvision FIRST
+# We force this to happen before Detectron is even looked at
+RUN pip install --no-cache-dir pip --upgrade && \
+    pip install --no-cache-dir \
+    torch==2.0.1+cpu \
+    torchvision==0.15.2+cpu \
+    --extra-index-url https://download.pytorch.org/whl/cpu
+
+# 4. Install Detectron2
+# Now that Torch is installed, this build will succeed
+RUN pip install --no-cache-dir git+https://github.com/facebookresearch/detectron2.git
+
+# 5. Install remaining requirements
+WORKDIR /app
+COPY --chown=user ./requirements.txt requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+# 6. Copy the rest of your app
+COPY --chown=user . /app
+
+# 7. Launch the app
+CMD ["python", "app.py"]