dev-server inside docker?

Hi,

I’m trying to get encore dev-server to work inside a docker container.

I noticed at first that it listens only on the container’s loopback interface (‘localhost’), which was OK, because I could use --host 0.0.0.0 to get it to listen on the proper network interface…

But when I do this the manifest.json ends up using http://0.0.0.0:8080/.... as it’s url prefix, and this stops the assets from loading.

I tried the --public ... flag to set a hostname for the public URL, but that doesn’t seem to affect manifest generation.

How can I do this?

Thanks.

[Jeyffrey]

My project is based on a Docker and my container listen to the port 8088. Symfony webpack-dev-server works by default on the port 8080. In the docker-compose file, i just had to open the 8080 port in both sides :

services:
    ...
    my_container:
        ...
        ports:
            ...
            - "8080:8080".

And my Yarn script is now (according to this comment) : "dev-server": "encore dev-server --host 0.0.0.0 --disable-host-check"

It just works now ! 🎉

[samjarrett]

Hey @davidmpaz, actually it’s an issue with how encore bundles a few webpack configuration items into one setting, which in a docker (or any remote dev style environment) you would hit an issue with.

To recap the problem:

1. webpack dev server defaults to binding only on local loopback
2. Official --help on encore dev-server says to use --host= to change the bind
3. This also then changes the host name configured in webpack manifest plugin

Encore doesn’t provide a way of altering the config manually for the manifest plugin. If I was using standard webpack config I would easily be able to override that.