I would like to run an express server that can trigger NodeJS code as well as spawn Python processes.

How would I configure the Dockerfile? Would I for example use Ubuntu, Node or Python as my base image?

Pseudocode of Dockerfile:

FROM ???:???-alpine

RUN npm install 
RUN install python?
EXPOSE 8080
CMD [ "node", "index" ]

Pseudocode of running web server:

www.some-url.com/jobs/my-node-js-route
=> express route that runs a node function     

www.some-url.com/jobs/my-python-route
=> express route that spawns a python process