Cannot access http://localhost:8100 from host

Hello all,
after I did the following steps, I am not able to access the webpage served from ionic:

1. pulled the image
2. started the container (with exposing port 8100)
3. created an own simple app with: ionic start myApp tabs
4. moved into the myApp directory and started it with: ionic serve (--external)

--> my browser still does not show the page.

Do you have any advice or hint for me?

I solved the problem by using

ionic serve --address=0.0.0.0

But I have not found any good explanation why it works this way.
Do you have any information for this workaround?

[beevelop]

Looks like the default command only listens on localhost. If you run it in a container, the localhost of your container is not the localhost of your host machine. This can be applied to all kind of services which run in containers. Most often you need to expose them on all interfaces (what you did with the address command).

AFAICT it should also work using the --external command line flag: https://ionicframework.com/docs/cli/commands/serve#option-external

[aniskoubaa]

Hi
I am having the same issue. I tried even with
ionic serve --address=0.0.0.0
ionic serve --external

and still cannot access http://localhost:8100

Is there any solution?
I tried some other images (older) and I was able to connect, but not on this one.

[beevelop]

Could you provide the exact docker command you used for launching the container?