Unable to build - Image Fetch Error - service/builder is not available/installed on Windows 10 & WSL2 for v1.0.0-beta-1 and v1.0.0

Rancher Desktop Version

1.0.0-beta-1 and 1.0.0

Rancher Desktop K8s Version

1.23.1

What operating system are you using?

Windows

Operating System / Build Version

19043.1466

What CPU architecture are you using?

x64

Linux only: what package format did you use to install Rancher Desktop?

No response

Windows User Only

VPN is ZScaler

Actual Behavior

After installing the above version, when I run a kubectl get all -A -o name command I do not see a listing for the builder service. Additionally I also cannot build any docker files. When I attempt to do so, I get the error ‘Unrecognized Image Format’. Additional text of the error is:

error: failed to solve: node:lts-alpine; failed to do request: Head "https://registry-1.docker.io/v2/library/node/manifests/lts-alpine": dial tcp: lookup registry-1.docker.io on .... : i/o timeout

Steps to Reproduce

Install beta version as above with ZScaler running and attempt to build any docker file.

Result

[+] Building 10.4s (3/3) FINISHED
=> [internal] load build definition from Dockerfile                                                               0.3s
=> => transferring dockerfile: 953B                                                                               0.1s
=> [internal] load .dockerignore                                                                                  0.3s
=> => transferring context: 2B                                                                                    0.1s
=> ERROR [internal] load metadata for docker.io/library/node:lts-alpine                                          10.0s
------
> [internal] load metadata for docker.io/library/node:lts-alpine:
------
Dockerfile:1
--------------------
   1 | >>> FROM node:lts-alpine
   2 |
   3 |     # Install chromium manually
--------------------
error: failed to solve: node:lts-alpine: failed to do request: Head "https://registry-1.docker.io/v2/library/node/manifests/lts-alpine": dial tcp: lookup registry-1.docker.io on 192.168.0.1:53: read udp 192.168.3.43:55223->192.168.0.1:53: i/o timeout
FATA[0011] unrecognized image format

Expected Behavior

Rancher Desktop should be able to build the docker file.

Additional Information

No response

[lincoln42]

@gaderGarcia you are right, the issue is a DNS issue wherein when the rancher-desktop WSL distro starts up, it seems to put itself as the DNS server instead of properly picking up the DNS servers configured for the currently active (VPN or not) connection of the host. I came across this issue on the WSL board (https://github.com/microsoft/WSL/issues/5336) which again seems to be the same thing but people are running scripts to make the update manually.

I also came across this really good article (https://unix.stackexchange.com/questions/589683/wsl-dns-not-working-when-connected-to-vpn) on the issue and there ‘Rubin Simons’ has provided a PowerShell script that you can run via the task scheduler or just manually targeting your WSL distro to fix the DNS by picking up the connect DNS servers from the currently connected network adapter. I have tried this script and it works, I am able to build images now and the changes stick even after a reboot and going on and off the VPN as well.

@jandubois
Can the Rancher Desktop team take a look at making this DNS fix, provided by ‘Rubin Simons’, part of the product? It will save all of us having to make hacky script fixes for this issue. I have already burnt many productive hours finding a fix for this and it would save everyone else the hassle as well.

[Nino-K]

We have implemented a process that defines the most suitable DNS servers in /etc/resolve.conf while on a dedicated VPN tunnel. These changes should be available in our next release. I’m going to close this issue, feel free to re-open if there is any feedback.