Create Dockerfile.test

Dockerfile.test

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+FROM python:3.10-slim
+
+ENV PYTHONUNBUFFERED=1
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends ffmpeg && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+ARG APP_USER_UID=1000
+ARG APP_USER_GID=1000
+RUN groupadd --gid $APP_USER_GID appgroup && \
+    useradd --uid $APP_USER_UID --gid appgroup --shell /bin/bash --create-home appuser
+
+WORKDIR /home/appuser/app
+
+RUN pip install --no-cache-dir --upgrade pip
+RUN pip install --no-cache-dir streamlit moviepy # Pillow (if TextClip test is uncommented)
+
+COPY test_app.py .
+
+RUN chown -R appuser:appgroup /home/appuser/app
+USER appuser
+
+EXPOSE 8501
+CMD ["streamlit", "run", "test_app.py", "--server.headless=true"]