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+# Use an official Python runtime as a parent image
+FROM python:3.11-slim
+
+# Install system dependencies (build-essential, git, wget, ca-certificates, and standard runtimes)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    git \
+    wget \
+    ca-certificates \
+    libgl1 \
+    libglib2.0-0 \
+    libgomp1 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set the working directory in the container
+WORKDIR /code
+
+# Copy the requirements file and install dependencies
+COPY requirements.txt /code/requirements.txt
+RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+
+# Create the non-root user and home directory (still as ROOT)
+RUN useradd -m -u 1000 user
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
+
+# Set working directory to user home app folder
+WORKDIR /home/user/app
+
+# Copy the application code into the container
+COPY . /home/user/app
+
+# Pre-download all required AI models (as ROOT, guaranteeing absolute write permissions)
+RUN mkdir -p /home/user/app/backend/models && \
+    mkdir -p /home/user/.u2net && \
+    wget -q -O /home/user/app/backend/models/depth_anything.onnx "https://huggingface.co/onnx-community/depth-anything-v2-small/resolve/main/onnx/model.onnx" && \
+    wget -q -O /home/user/app/backend/models/gfpgan.onnx "https://huggingface.co/hacksider/deep-live-cam/resolve/main/GFPGANv1.4.onnx" && \
+    wget -q -O /home/user/app/backend/models/realesrgan.onnx "https://huggingface.co/tidus2102/Real-ESRGAN/resolve/main/Real-ESRGAN_x2plus.onnx" && \
+    wget -q -O /home/user/.u2net/u2net.onnx "https://github.com/danielgatis/rembg/releases/download/v0.0.0/u2net.onnx" && \
+    wget -q -O /home/user/.u2net/BiRefNet-general-epoch_244.onnx "https://github.com/danielgatis/rembg/releases/download/v0.0.0/BiRefNet-general-epoch_244.onnx"
+
+# Recursively give user (1000) full ownership of their files and cached weights
+RUN chown -R user:user /home/user
+
+# Switch to the non-root user for execution safety and Hugging Face requirements
+USER user
+
+# Expose port 7860, which Hugging Face expects
+EXPOSE 7860
+
+# Run the Streamlit application on port 7860
+CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]