Dockerfile

# Use an official Python runtime as a parent image
FROM python:3.10-slim-bullseye

# Set environment variables for Python, pip, and locale
ENV PYTHONUNBUFFERED 1
ENV PYTHONDONTWRITEBYTECODE 1
ENV PIP_NO_CACHE_DIR off
ENV PIP_DISABLE_PIP_VERSION_CHECK 1
ENV DEBIAN_FRONTEND=noninteractive
ENV LANG C.UTF-8
ENV LC_ALL C.UTF-8

# Set the working directory in the container
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    ffmpeg \
    imagemagick \
    git \
    fonts-dejavu-core \
    fonts-liberation \
    libgl1-mesa-glx \
    libglib2.0-0 \
    && rm -rf /var/lib/apt/lists/*

# Modify ImageMagick policy.xml
RUN if [ -f /etc/ImageMagick-6/policy.xml ]; then \
        XML_FILE="/etc/ImageMagick-6/policy.xml"; \
        echo "INFO: Modifying ImageMagick policy at $XML_FILE (v6) for MoviePy compatibility." ; \
    elif [ -f /etc/ImageMagick-7/policy.xml ]; then \
        XML_FILE="/etc/ImageMagick-7/policy.xml"; \
        echo "INFO: Modifying ImageMagick policy at $XML_FILE (v7) for MoviePy compatibility." ; \
    else \
        XML_FILE=""; \
        echo "WARNING: ImageMagick policy.xml not found in /etc/ImageMagick-[67]/. MoviePy TextClip might fail." ; \
    fi && \
    if [ -n "$XML_FILE" ] && [ -f "$XML_FILE" ]; then \
        sed -i 's/<policy domain="path" rights="none" pattern="@\*"\/>/<!-- <policy domain="path" rights="none" pattern="@\*" \/> -->/' "$XML_FILE" && \
        sed -i 's/<policy domain="coder" rights="none" pattern="TEXT"\/>/<!-- <policy domain="coder" rights="none" pattern="TEXT" \/> -->/' "$XML_FILE" && \
        sed -i 's/<policy domain="coder" rights="none" pattern="LABEL"\/>/<!-- <policy domain="coder" rights="none" pattern="LABEL" \/> -->/' "$XML_FILE" && \
        sed -i 's/<policy domain="coder" rights="none" pattern="MVG"\/>/<!-- <policy domain="coder" rights="none" pattern="MVG" \/> -->/' "$XML_FILE" && \
        sed -i 's/<policy domain="coder" rights="none" pattern="MSL"\/>/<!-- <policy domain="coder" rights="none" pattern="MSL" \/> -->/' "$XML_FILE" && \
        sed -i 's/<policy domain="coder" rights="none" pattern="HTTPS"\/>/<!-- <policy domain="coder" rights="none" pattern="HTTPS" \/> -->/' "$XML_FILE" && \
        sed -i 's/<policy domain="coder" rights="none" pattern="HTTP"\/>/<!-- <policy domain="coder" rights="none" pattern="HTTP" \/> -->/' "$XML_FILE" && \
        echo "INFO: ImageMagick policy modifications applied to $XML_FILE." ; \
    fi

# Create a non-root user and group
RUN groupadd -r appgroup && useradd --no-log-init -r -g appgroup -u 1000 appuser
# Create home directory structure for appuser, including .cache for pip
RUN mkdir -p /home/appuser/.cache/pip && chown -R appuser:appgroup /home/appuser

# Set Streamlit home directory to be writable by appuser
# This directory will be created within /home/appuser, so appuser will own it.
ENV STREAMLIT_HOME=/home/appuser/.streamlit 
# No need to mkdir/chown STREAMLIT_HOME here if appuser creates it at runtime,
# or if we ensure /home/appuser is writable by appuser.
# However, to be safe, especially if Streamlit tries to create it very early:
RUN mkdir -p $STREAMLIT_HOME && chown -R appuser:appgroup $STREAMLIT_HOME

# Copy the requirements file first
COPY --chown=appuser:appgroup requirements.txt .

# Install Python dependencies as the non-root user
USER appuser
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Switch back to root temporarily for copying application files and setting permissions
USER root
COPY . .
RUN chown -R appuser:appgroup /app

# Create runtime directories as root, then chown to appuser
RUN mkdir -p /app/temp_cinegen_media && chown -R appuser:appgroup /app/temp_cinegen_media
RUN mkdir -p /app/assets/fonts && chown -R appuser:appgroup /app/assets/fonts
# Ensure custom fonts copied in assets/fonts are usable system-wide if needed by MoviePy's TextClip
# This assumes your 'arial.ttf' (or other custom fonts) are in 'assets/fonts/' in your project.
# If they are, copy them to a system font directory and update the font cache.
# The VisualEngine also tries to load from 'assets/fonts/' directly via Pillow.
RUN if [ -d "/app/assets/fonts" ] && [ "$(ls -A /app/assets/fonts)" ]; then \
        mkdir -p /usr/local/share/fonts/truetype/cinegen_custom && \
        cp /app/assets/fonts/*.*tf /usr/local/share/fonts/truetype/cinegen_custom/ 2>/dev/null || true && \
        fc-cache -fv && \
        echo "INFO: Copied custom fonts and refreshed font cache."; \
    else \
        echo "INFO: No custom fonts found in /app/assets/fonts to copy system-wide." ; \
    fi

# Switch to the non-root user for running the application
USER appuser

# Expose the port Streamlit runs on
EXPOSE 8501

# Define the command to run the application
CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0", "--global.sharingMode=off", "--client.gatherUsageStats=false"]