To auto start node.js npm app after reboot, one way is to use pm2.
First instead pm2:
> npm install -g pm2
Configure pm2 to start as root
> pm2 startup -u root
Add the npm app to pm2 (example shown here is a react app, replace “yourapp” with the name of your react app)
> pm2 start node_modules/react-scripts/scripts/start.js –name “yourapp”
Save the configuration
> pm2 save
Now when you reboot the server, your npm app will be automatically run.
1. Create a dockerfile, e.g., mydockerfile with the following content:
FROM alpine:3.7
Maintainer myhlow
RUN apk upgrade –update && apk add python3 python3-dev gcc gfortran freetype-dev musl-dev libpng-dev g++ lapack-dev emacs
RUN pip3 install –upgrade pip
RUN pip3 install virtualenv
RUN pip3 install numpy scipy pandas scikit-learn
2. Build a local Python 3 with Emacs docker image in the same folder as the dockerfile:
docker build -t python_docker_base -f mydockerfile .
3. Run the docker image:
docker run -it python_docker_base:latest
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Techucation 
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