Base docker image for multiple service in one container settings, contains: cron, python3, and supervisor.

Dockerfile

FROM node:bullseye-slim

# Install cron
RUN apt-get update && apt-get install -y cron && which cron && \
    rm -rf /etc/cron.*/*

# Install Python3
RUN apt-get install -y python3

# Install Supervisord
RUN apt-get install -y supervisor

COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf

CMD ["supervisord"]