Dockerfile

# Stage 1: Build environment
FROM python:3.10-slim-buster AS builder

# Set the working directory
WORKDIR /home/app

# Update the package index and install system-level dependencies
RUN apt-get update && \
    apt-get install -y build-essential \
    --no-install-recommends \ 
    ffmpeg cmake libsm6 libxext6 libxrender-dev && \
    apt-get -y autoremove && \
    apt-get clean autoclean && \
    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Copy the contents of the root directory into the container at /home/app
COPY . .

# Install Python Dependencies 
RUN pip install --no-cache-dir --upgrade pip \
    --trusted-host pypi.python.org \ 
    --no-deps -r requirements.txt && \
    rm -rf /root/.cache/pip/*

# Stage 2: Runtime environment
FROM python:3.10-slim-buster AS final

# Expose the port that the application will run on (optional)
EXPOSE 8050

# Copy the necessary from the builder stage
COPY --from=builder /home/app /home/app
COPY --from=builder /usr/local/lib/python3.10/site-packages /usr/local/lib/python3.10/site-packages

# Change the working directory
WORKDIR /home/app/functions

# Start the application
CMD [ "python3", "dashboard_f22.py" ]