Cannot reach docker container through WSL2

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I run into an issue with a docker and WSL2 configuration that was running ok for weeks...

I'm running a docker Apache2 web server on Ubuntu WSL2 with port forwarding. I can see using nmap the 8080 Ubuntu port is open when docker image is running.

I can curl the web server from within the Ubuntu WSL2 using both 127.0.0.1:8080 and eth0 inet address (172.17.118.136:8080) and get the apache default page. I have an issue when trying to access the web server from my Windows host with the Ubuntu eth0 inet address : connection timed out.

From my Windows host the ping of Ubuntu eth0 is ok, and when I run an Apache2 web server directly from Ubuntu WSL2 (no docker), my Windows host is able to connect to it using eth0 inet address.

docker
2 Answers

You can use the following lsof command in WSL2 to find out on which port the docker is running and then use that port to connect:

sudo lsof -i -P | grep LISTEN

You will get a result like this: enter image description here

The port for me is 49157: so, I can access the Docker container which is inside WSL through Windows by http://localhost:49157 or by wsl inet ip -> http://172.31.255.167:49157

Note: if lsof is not installed then use the following command to install it:

sudo apt install lsof
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