Improve Air-Gap install story

[totallyGreg]

Describe the requested changes
I'm creating this as docs improvement but I believe it is a bigger story.

List the desired changes to be made to the Gloo Edge docs.
Fully document what is needed to successfully install Gloo Edge in an air-gapped environment in a Kubernetes environment
e.g.

• List of packages needed with checksums for manual verification
• List of helm overrides that are necessary to point images to local registry

Product Improvements

• Provide helm chart overrides for all images so that they can be redirected to a local registry. (currently busybox and jimmydyson missing)
  • Global override should work with

  quay.io/solo-io/gloo-fed-apiserver:1.9.2,
  quay.io/solo-io/gloo-federation-console:1.9.2,
  quay.io/solo-io/gloo-fed-apiserver-envoy:1.9.2
  grafana/grafana:8.2.1
  quay.io/coreos/kube-state-metrics:v1.9.7
  jimmidyson/configmap-reload:v0.5.0,
  quay.io/prometheus/prometheus:v2.24.0
  busybox:1.28
  

• Reducing the number of dependent images would also be desirable. ^^^
• Incorporate helm verify for more automated verification
• contemplate release of OCI artifact

Link to any relevant existing docs

1. https://docs.solo.io/gloo-edge/latest/...

Additional context
Add any other context about the problem here.
helm/helm#8259

[chrisgaun]

This is the part that is blocking users right now:

• [Migrated] Provide Helm Chart Overrides  solo-io/gloo#5622

[totallyGreg]

Easily get list of images in the chart
VERSION=v1.10.0-beta7 ; helm template glooe/gloo-ee --version $VERSION | yq e '. | .. | select(has("image"))' - | grep image:

[artberger]

We do have an airgap section in the GEE installation doc here: https://docs.solo.io/gloo-edge/latest/installation/enterprise/#airgap-installation

[github-actions]

This issue has been marked as stale because of no activity in the last 180 days. It will be closed in the next 180 days unless it is tagged "no stalebot" or other activity occurs.

[github-actions]

This issue has been closed due to no activity in the last 12 months.