Switch Space to minimal OpenEnv demo

Dockerfile

@@ -1,31 +1,19 @@
-FROM omkarasoftware/freeciv-web:latest
+FROM python:3.11-slim
 
-USER root
-RUN apt-get update && apt-get install -y \
-    git \
-    curl \
-    ca-certificates \
- && rm -rf /var/lib/apt/lists/*
-RUN mkdir -p /app/env && chown -R docker:docker /app
+WORKDIR /app
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+ENV ENABLE_WEB_INTERFACE=true
 
-USER docker
-ENV HOME=/home/docker
-WORKDIR /app/env
+RUN apt-get update && apt-get install -y --no-install-recommends curl \
+ && rm -rf /var/lib/apt/lists/*
 
-COPY --chown=docker:docker . /app/env
-RUN chmod +x /app/env/scripts/start_space.sh
-RUN curl -LsSf https://astral.sh/uv/install.sh | sh
-ENV PATH="/app/env/.venv/bin:/home/docker/.local/bin:$PATH"
-RUN uv python install 3.11
-RUN uv venv --python 3.11 /app/env/.venv
-RUN UV_PROJECT_ENVIRONMENT=/app/env/.venv uv sync --frozen --no-dev --no-editable
+RUN pip install --no-cache-dir "openenv-core[core]==0.2.1" "uvicorn>=0.35.0"
 
-ENV PYTHONPATH="/app/env:$PYTHONPATH"
-ENV ENABLE_WEB_INTERFACE=true
-ENV FREECIV_SERVER_URL=http://127.0.0.1
-ENV FREECIV_TURN_TIMEOUT_S=120
+COPY README.md /app/README.md
+COPY minimal_space_app.py /app/minimal_space_app.py
 
 HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=10 \
     CMD curl -f http://localhost:8000/health || exit 1
 
-CMD ["/app/env/scripts/start_space.sh"]
+CMD ["python", "-m", "uvicorn", "minimal_space_app:app", "--host", "0.0.0.0", "--port", "8000"]