chore: Update templates from Always to IfNotPresent for image_pull_policy (#501)

## Description Change `image_pull_policy` from `Always` to `IfNotPresent` on Coder owned templates. Given these are a reference point for users and customers and they copy them into their own templates I think it makes sense to encourage the use of caching of images. ## Type of Change - [ ] New module - [ ] New template - [ ] Bug fix - [x] Feature/enhancement - [ ] Documentation - [ ] Other ## Template Information **Path:** https://github.com/coder/registry/tree/main/registry/coder/templates/kubernetes-devcontainer https://github.com/coder/registry/tree/main/registry/coder/templates/kubernetes-envbox https://github.com/coder/registry/tree/main/registry/coder/templates/kubernetes ## Testing & Validation - [ ] Tests pass (`bun test`) - [ ] Code formatted (`bun fmt`) - [x] Changes tested locally ## Related Issues None

Author: rowansmithau

registry/coder/templates/kubernetes-devcontainer/main.tf

@@ -264,7 +264,7 @@ resource "kubernetes_deployment" "main" {
  container {
  name = "dev"
  image = var.cache_repo == "" ? local.devcontainer_builder_image : envbuilder_cached_image.cached.0.image
- image_pull_policy = "Always"
+ image_pull_policy = "IfNotPresent"
  security_context {
  privileged = true
  }
@@ -455,4 +455,4 @@ resource "coder_metadata" "container_info" {
  key = "cache repo"
  value = var.cache_repo == "" ? "not enabled" : var.cache_repo
  }
-}
+}

registry/coder/templates/kubernetes-envbox/main.tf

@@ -152,7 +152,7 @@ resource "kubernetes_pod" "main" {
  name = "dev"
  # We highly recommend pinning this to a specific release of envbox, as the latest tag may change.
  image = "ghcr.io/coder/envbox:latest"
- image_pull_policy = "Always"
+ image_pull_policy = "IfNotPresent"
  command = ["/envbox", "docker"]
 
  security_context {
@@ -310,4 +310,4 @@ resource "kubernetes_pod" "main" {
  }
  }
  }
-}
+}

registry/coder/templates/kubernetes/main.tf

@@ -287,7 +287,7 @@ resource "kubernetes_deployment" "main" {
  container {
  name = "dev"
  image = "codercom/enterprise-base:ubuntu"
- image_pull_policy = "Always"
+ image_pull_policy = "IfNotPresent"
  command = ["sh", "-c", coder_agent.main.init_script]
  security_context {
  run_as_user = "1000"