Add parameter for Kubernetes registry

Now supports a parameter "mirror" for pulling the images from:

mirror: "http://host.lima.internal:8080"

A pull-through cache for docker.io and other registries is at:

https://aceeric.github.io/ociregistry/

Signed-off-by: Anders F Björklund <anders.f.bjorklund@gmail.com>

templates/k3s.yaml

@@ -41,6 +41,15 @@ provision:
             INSTALL_K3S_ARTIFACT_URL={{.Param.proxy}}/HTTPS///github.com/k3s-io/k3s/releases/download
             export INSTALL_K3S_ARTIFACT_URL
     {{- end}}
+    {{if .Param.mirror }}
+            mkdir -p /etc/rancher/k3s
+            cat <<EOF >/etc/rancher/k3s/registries.yaml
+    mirrors:
+      "*":
+        endpoint:
+          - "{{.Param.mirror}}"
+    EOF
+    {{end}}
     {{if not ( and .Param.url .Param.token )}}
             curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="server --write-kubeconfig-mode 644" sh -
     {{else}}
@@ -78,5 +87,8 @@ param:
   # The proxy to use when downloading artifacts from k3s.io
   # For a local proxy use for instance "http://host.lima.internal:3142"
   proxy: ""
+  # The mirror to use when pulling images from registry
+  # For a local mirror use for instance "http://host.lima.internal:8080"
+  mirror: ""
   url: ""
   token: ""