[Python] Copying / Syncing files from a pip package that requires additional install to a Prod...

I am on this article (https://www.docker.com/blog/how-to-dockerize-django-app/) to Dockerize a Django App

I have playwright==1.50.0 in my requirements.txt

post pip install one has to do playwright install which can follow after

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt


But how do I know this alone is enough to have the browser(s) copied to the Stage 2 (production) build?

Code under "Make improvements to the Dockerfile"

# Copy the Python dependencies from the builder stage
COPY --from=builder /usr/local/lib/python3.13/site-packages/ /usr/local/lib/python3.13/site-packages/
COPY --from=builder /usr/local/bin/ /usr/local/bin/


Where do the browsers get installed to on performing playwright install ?

EDIT (included the Dockerfile code) :

# Stage 1: Base build stage
FROM python:3.13 AS builder

# Create the app directory
RUN mkdir /app

# Set the working directory
WORKDIR /app

# Set environment variables to optimize Python
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Upgrade pip and install dependencies
RUN pip install --upgrade pip

# Copy the requirements file first (better caching)
COPY requirements.txt /app/

# Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt
RUN playwright install

# Stage 2: Production stage
FROM python:3.13

RUN useradd -m -r appuser && \
mkdir /app && \
chown -R appuser /app

# Copy the Python dependencies from the builder stage
COPY --from=builder /usr/local/lib/python3.13/site-packages/ /usr/local/lib/python3.13/site-packages/
COPY --from=builder /usr/local/bin/ /usr/local/bin/

# Set the working directory
WORKDIR /app

# Copy application code
COPY --chown=appuser:appuser . .

# Set environment variables to optimize Python
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Switch to non-root user
USER appuser

# Expose the application port
EXPOSE 8000

# Start the application using Gunicorn
CMD ["gunicorn", "--bind", "0.0.0.0:8000", "--workers", "3", "nerul.wsgi:application"]
# CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]


I have RUN playwright install right after RUN pip install.

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