#--- PREREQS:  
#   - https://huggingface.co/spaces/radames/nginx-gradio-reverse-proxy/tree/main
#   - https://muellerzr.github.io/blog/huggingface_docker.html
#   - https://www.tecmint.com/enable-nginx-status-page/

#--- USAGE:
#--- to build/rebuild the image;  make sure you stop and remove the container if you are replacing/upgrading;  or change the version tag# from 0.0.1
#--- to tag the image prior to push to DockerHub;  docker login and then register user/image:tag
#--- to push this image to DockerHub, example based on the repo:  kidcoconut73/<img>

#   docker build -t img_nginx_hugspace:0.0.1 .
#   docker create -it -p 49130:39130 --name ctr_nginx_hugspace img_nginx_hugspace:0.0.1
#   docker start -it ctr_nginx_hugspace

#   docker run -it -p 7860:7860 -p 49131:39131 -p 49132:39132 --name ctr_nginx_templ img_nginx_templ:0.0.1

#   docker push kidcoconut73/<img:tag>


#--- use a base image of python
FROM python:3.8-slim-buster


# Install nginx and give permissions to 'pn'
# See https://www.rockyourcode.com/run-docker-nginx-as-non-root-user/
USER root

#$ apt list --installed | grep nginx;  1.22.1-9
RUN apt-get -y update && apt-get -y install nginx

RUN mkdir -p /var/cache/nginx \
             /var/log/nginx \
             /var/lib/nginx
RUN touch /var/run/nginx.pid

RUN groupadd user
RUN useradd -d /home/user -ms /bin/bash -g user -G user -p user user
RUN chown -R user:user /var/cache/nginx \
                       /var/log/nginx \
                       /var/lib/nginx \
                       /var/run/nginx.pid

#--- update nginx config;  establish routes/proxy pass;  remove user directive
COPY ./nginx/etc.nginx.confd_default.conf /etc/nginx/conf.d/default.conf
COPY ./nginx/etc.nginx_nginx.conf /etc/nginx/nginx.conf
#COPY ./nginx/etc.nginx.sites-available.default /etc/nginx/sites-available/default


#--- Install dependencies and build app as non-root
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

#--- set docker image working directory to /app
RUN mkdir $HOME/app
WORKDIR $HOME/app

#--- install all lib dependencies into the image
COPY --chown=user ./requirements.txt ./requirements.txt
RUN pip install --no-cache-dir -r ./requirements.txt

#--- copy  files from the local pwd to the docker image /app folder
#--- .dockerignore:  ensure no local data folders or files (images) are copied into the docker image/container 
COPY --chown=user ./_env_config/stg_dev/utl_dkr_preRun.sh ./scripts/docker/
COPY --chown=user ./fastapi ./fastapi
COPY --chown=user ./gradio ./gradio
COPY --chown=user ./streamlit ./streamlit

#--- for nginx reverse proxy;  external 49130;  internal 39130
#--- for streamlit;  external 49131;  internal 39131
#--- for fastapi;  external 49132;  internal 39132
#--- for huggingface;  assume 1:1 mapping between internal and external ports;  and only one port can truly be exposed
EXPOSE 7860
EXPOSE 49131
EXPOSE 49132

#--- establish environment prereqs
#CMD ls -la /app/scripts/docker
ENTRYPOINT [ "./scripts/docker/utl_dkr_preRun.sh" ]


#--- WORKAROUND:  you may have to stop the docker container through docker desktop, or cmd line eg docker kill <ctr_name>