[WIP] Devcontainers v2

[Gregory-Pereira]

Changes:

• install kubectl, kubeseal, docker and kind into the devcontainer
• bind mount the docker socket to devcontainer giving it access to host docker instance
• [WIP] enabling kind cluster creation, deletion, and manipulation seamlessly from both devcontainer and host machine, or a mix therof
• install zsh and oh-my-zsh for syntax highlighting, above binary completions, and general DevX. Also setting it as the default shell
• changing the kind related make targets to be deploy-kind, undeploy-kind, etc. This keeps the naming conventions consistent with how the openshift prod and qa envs are named.

[Gregory-Pereira]

Could use some networking help from the experts @nerdalert and @vishnoianil. Inside the container it can see itself as well as other pre-provisioned kind cluster nodes, however when I try to make a kind cluster from within the container it gives me port refusal: The connection to the server 127.0.0.1:6443 was refused - did you specify the right host or port?. I bound this to 6443 in the networking section of the instructlab-ui kind cluster we have because I need some way of sharing access to the kind kubernetes API to the devcontainer, and by default it just picks a random port. Is a Proxy for the kube API the right answer here? I see there are some options for that: https://pkg.go.dev/sigs.k8s.io/kind/pkg/apis/config/v1alpha4#Networking. I think I get what the problem is, I just dont know how to solve it.