Update Dockerfile

FROM python:3.10-slim

RUN apt update && apt install git gcc build-essentials python-dev -y

FROM python:3.10

RUN apt update

COPY requirements.txt requirements.txt

RUN pip install --no-cache-dir -r requirements.txt

RUN apt install fontconfig fonts-nanum -y

RUN apt install fonts-nanum -y

RUN fc-cache -fv

RUN cp /usr/share/fonts/truetype/nanum/Nanum* /usr/local/lib/python3.10/site-packages/matplotlib/mpl-data/fonts/ttf/

RUN apt-get clean autoclean && apt-get autoremove --yes && rm -rf /var/lib/{apt,dpkg,cache,log}/