I am quite new to docker and am in the process of deploying a python flask application using docker on a redhat virtual box.
So far I have followed a few basic tutorials to build a docker file to establish an image to use, commands to run, ports to expose etc. All of that makes sense to me.
However also on this virtual box, are quite a few different web services deployed using nginx and systemctl.
The instructions I previously followed are roughly (using nginx, gunicorn, systemctl):
#
# reverse proxy, map URL to localhost port
/etc/nginx/nginx.conf
# make service unit file
# example <service>.service with basic ExecStart cmd, Restart etc.
# systemctl stuff
Systemctl daemon-reload / systemctl enable [service] / systemctl start [service]
Gunicorn is importing a method from a Python module
systemctl reload nginx
####
At this point I am quite confused on how to run a docker container using nginx - or really where the scope of the docker container stops and the systemwide environment begins i.e. Is it necessary to do reverse proxy’ing on the system wide nginx.conf or would I have a separate nginx on the docker container? Do I need to run systemctl?
I am not necessarily trying to exactly follow the above directions, just trying to mimic the general behavior - reverse proxy, automatic restarts, etc. .
Sorry these may be silly questions, I do not understand docker well enough to generalize and ask intelligent questions quite yet. If anyone could even help re-interpret my question would be greatly appreciated.