Cannot contact docker container on Windows host

Question

tl;dr summary of the problem:

• Application launches successfully within container, binds to 127.0.0.1:8080 within the container, and successfully services web requests, but only within the container
• docker ps -a confirms that port 8080 is being exposed
• I cannot communicate with the application from the host using the container's actual IP address when I request http://[Container IP address]:8080
• The host is running Windows 10
• The Windows Firewall is completely disabled for troubleshooting

To troubleshoot I have created the simplest possible application to run in a dockers container, an F# / Suave application like so:

open Suave
[<EntryPoint>]
let main args =

    startWebServer defaultConfig (Successful.OK "Hello World!")
    0

Which works fine, returning a simple "Hello World!" when I run it locally.

To containerize the app I have followed the instructions at " Dockerize a .NET Core application " which instructs me to run the container like

$ docker run -d -p 8080:80 --name myapp aspnetapp

I cannot connect to the "website" at http://localhost:80 nor http://localhost:8080 , which apparently is a common problems for Docker users running Windows. However the solution that seems to have fixed this problem for every other Windows user on the internet, running

docker inspect myapp

and then hitting the resulting IPAddress, does not work either. I get:

Hitting both http://172.17.0.2:80 and http://172.17.0.2:8080 in Chrome gives me "Site can't be reached."

Also worth noting, when I run

docker logs myapp

The only line is

[17:43:21 INF] Smooth! Suave listener started in 73.476ms with binding 127.0.0.1:8080

As a guess, I have also tried

ipconfig

and then hitting the IP address of the Docker NAT adapter, but this also results in an unreachable site.

UPDATE :

Another observation which might or might not be relevant: Many online tutorials suggest that under Windows you need to directly connect to the IP Address of the container, and to get that IP address by running

docker inspect -f "{{ .NetworkSettings.Networks.nat.IPAddress }}" myapp

which for me, always yields:

When I run a vanilla

docker inspect myapp

the resulting JSON is not structured exactly like the recommended query. I get a bridge node, but no nat node:

Answer 1

您的应用程序说它绑定到localhost：8080，但是您正在发布端口80。停止容器，然后使用以下命令重新运行：

docker run -d -p 8080:8080 --name myapp aspnetapp

Answer 2

Try adding the following lines in docker file

ENV ASPNETCORE_URLS http://+:80 
EXPOSE 80 

Reference: https://www.sep.com/sep-blog/2017/02/20/hosting-asp-net-core-docker/

Answer 3

我的容器化应用需要侦听/绑定到0.0.0.0，而不是127.0.0.1。