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# Start from Ubuntu 20.04
FROM ubuntu:20.04

# Set the working directory in the Docker image
WORKDIR /opendilab

# Install Python 3.8 and other dependencies
# We update the apt package list, install Python 3.8, pip, compilers and other necessary tools.
# After installing, we clean up the apt cache and remove unnecessary lists to save space.
RUN apt-get update && \
    apt-get install -y python3.8 python3-pip gcc g++ swig git && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# Create a symbolic link for Python and pip
# This makes it easy to call python and pip from any location in the container.
RUN ln -s /usr/bin/python3.8 /usr/local/bin/python && \
    ln -s /usr/bin/pip3 /usr/local/bin/pip

# Update pip and setuptools to the latest version
# This step ensures that we have the latest tools for installing Python packages.
RUN python -m pip install --upgrade pip setuptools

# Clone the LightZero repository from GitHub
# This step downloads the latest version of LightZero to our Docker image.
RUN git clone https://github.com/opendilab/LightZero.git

# Install the LightZero package in editable mode
# The -e option allows us to edit the source code without needing to reinstall the package.
RUN pip install -e ./LightZero