container integration

Signed-off-by: Michelle Dhanani <[email protected]>

Author: michelleN

proposals/004-container-integration/README.md

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+# SKIP 004 - Container Integration in SpinKube
+
+Summary: Provide a path for running containers alongside WebAssembly workloads in SpinKube.
+
+Owner: Michelle Dhanani <[email protected]>
+
+Impacted Projects:
+
+- [X] spin-operator
+- [X] `spin kube` plugin
+- [ ] runtime-class-manager
+- [X] containerd-shim-spin
+- [ ] Governance
+- [ ] Creates a new project
+
+Created: October 2, 2024
+
+Updated: October 2, 2024
+
+## Background
+
+What is the context for your change? Why do you want it?
+There are scenarios where one might want to run a container alongside a WebAssembly application in the same pod. One reason might be a continuation of toolings (service meshes, logs, metrics). Another reason is there is a part of a logical workload that can be WebAssembly but another part that cannot run as WebAssembly and would need to run as a sidecar in the same Pod and be able to communicate to the WebAssembly bits over localhost.
+
+## Proposal
+
+One option is to add a way to configure containers in the SpinApp CR.
+
+TBD - would like to collect feedback here.
+
+## Alternatives Considered
+
+What else have you considered and why is the proposed solution a better fit?
+N/A