Always expose port 80

[vilyansky]

Image always expose port 80 regardless PORT, BIND environment variables settings.
Steps to reproduce:

1. Adds to Dockerfile

FROM tiangolo/meinheld-gunicorn-flask:python3.7-alpine3.8
ENV BIND 0.0.0.0:8080
ENV PORT 8080
ENV LOG_LEVEL debug
EXPOSE 8080:8080

2. build & run image
3. docker ps -a

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c36edb38d913 someuser/someimage:latest "/entrypoint.sh /sta…" 9 minutes ago Up 9 minutes 80/tcp, 8080/tcp stupefied_morse

[BoforsKing]

Have you tried setting these on your dockerfile:

ENV LISTEN_PORT 5000
EXPOSE 5000

[vilyansky]

Yes. It have a same result.
Cause of this that the base image have
EXPOSE 80
in it's Dockerfile - https://hub.docker.com/r/tiangolo/meinheld-gunicorn/dockerfile

[BoforsKing]

I just checked some internal project dockerfile and noticed I am not using meinheld-gunicorn-flask but meinheld-gunicorn:python3.7.

You can give it a try.

[vilyansky]

It will have same result. The image have expose default http port that can be unused in next stages. It's no critical but add misleads to containers list.
I can build my custom image of course.
Everything must be DIY, yeah.

[fabiom91]

So what's the solution?

[sysmetic]

docker run -p 3004:3004 -e PORT="3004" -e MODULE_NAME="app" myimage

it works.

[tiangolo]

Thanks for the patience with my reply! 🤓

I just removed EXPOSE 80 in the base image for this (tiangolo/meinheld-gunicorn-docker#128). 🚀