Dockerfile

FROM python:3.10-slim

ENV DEBIAN_FRONTEND=noninteractive
ENV PYTHONUNBUFFERED=1
ENV STREAMLIT_SERVER_PORT=7860
ENV STREAMLIT_SERVER_ADDRESS=0.0.0.0

# ---------------- System dependencies ----------------
RUN apt-get update && apt-get install -y --no-install-recommends \
    # ---- build tools ----
    build-essential \
    pkg-config \
    # ---- cairo / pango ----
    libcairo2 \
    libcairo2-dev \
    libpango-1.0-0 \
    libpango1.0-dev \
    libpangocairo-1.0-0 \
    libglib2.0-0 \
    # ---- runtime ----
    ffmpeg \
    # ---- LaTeX (minimal) ----
    texlive-latex-base \
    texlive-latex-extra \
    texlive-fonts-recommended \
    dvipng \
    dvisvgm \
    # ---- other ----
    ghostscript \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# ---------------- Python dependencies ----------------
RUN pip install --no-cache-dir \
    manim==0.19 \
    streamlit \
    streamlit-ace

WORKDIR /app

COPY app.py /app/app.py

EXPOSE 7860

CMD ["streamlit", "run", "app.py"]