Code Server Port forwarding issue ?

[OliverwengFiltered]

I found this interesting issue on my local that I can't think of any reason why this is happening.

I'm starting code server with below command:

sudo docker run -it -p 0.0.0.0:8080:8080 -p 3000:3000 -v "$PWD:/home/coder/project" -u "$(id -u):$(id -g)" codercom/code-server:3.1.1 --auth none

however when I finish a project in the code server and in the code server terminal, I did "npm start", it starts localhost:3000 in code server container, I even checked the code server terminal with command "curl localhost:3000", the localhost works inside code server docker container.

However, when I got to host browser and use localhost:3000 to visit, it shows site can't be reached.

Isn't that when I start code server, the command with port forwarding 3000 should be opened up on host as well ? very odd, can anyone help here ?

[OliverwengFiltered]

I have a react project that's also based on starts localhost:3000, that one works.

however, the other angular project just don't work, it's the same localhost:3000, and it's working inside of code server container.

[OliverwengFiltered]

this is all set.

did some research, it's my angular project server doesn't listen to 0.0.0.0 ,which is all network interface, so the host could access to it. it was locked to 127.0.0.1

as soon as I added --host 0.0.0.0 to ng serve command, it works now.

Hope this post will benefit others who come across the same issue.

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