Unable to deploy zammad using Helm

Hello, we’re facing issues when trying to deploy zammad in Google Cloud Enviroment by using helm charts.
After running the command
helm upgrade --install zammad zammad/zammad
We can see that some of pods are failed to create:
ammad-elasticsearch-master-0 1/1 Running 0 34m
zammad-init-4716bb59-a47f-49a8-89cd-574c80c8def3-ljrb8 0/3 ImagePullBackOff 0 34m
zammad-memcached-57c549c64d-pvbz2 1/1 Running 0 34m
zammad-nginx-78456645-q9xp2 0/1 ImagePullBackOff 0 34m
zammad-postgresql-0 1/1 Running 0 34m
zammad-railsserver-59954c465b-b2njd 0/1 ImagePullBackOff 0 34m
zammad-redis-master-0 1/1 Running 0 34m
zammad-scheduler-866856fc4d-b6mck 0/1 ImagePullBackOff 0 34m
zammad-websocket-5cf9f45f9b-c9f8x 0/1 ImagePullBackOff 0 34m

Failed pods showing the same problems similar to this:
Warning Failed 32m (x5 over 35m) kubelet Error: ImagePullBackOff
Warning Failed 27m kubelet Failed to pull image “Package zammad · GitHub”: rpc error: code = DeadlineExceeded desc = failed to pull and unpack image “Package zammad · GitHub”: failed to resolve reference “Package zammad · GitHub”: failed to do request: Head “https://ghcr.io/v2/zammad/zammad/manifests/12.3.6”: dial tcp 140.82.114.33:443: i/o timeout

Direct connections are possible:
curl -v https://ghcr.io

  • Trying 140.82.121.33:443…
  • Connected to ghcr.io (140.82.121.33) port 443 (#0)

When trying to pull image using docker - it’s pulled fine
docker pull Package zammad · GitHub

Status: Downloaded newer image for Package zammad · GitHub
Package zammad · GitHub

Can someone please help to debug this issue further?

I’m going to guess that this was a Google Cloud specific issue. Maybe Github temporarily blocked them. We have no control, neither over Docker Hub nor GitHubs Image repos.