Refactor v1alpha2 Linux namespace definitions

Signed-off-by: Chris Doherty <[email protected]>

api/v1alpha2/template.go

@@ -49,11 +49,9 @@ type Action struct {
 	// +optional
 	Volumes []Volume `json:"volumes,omitempty"`
 
-	// NetworkNamespace defines the network namespace to run the container in. This enables access
-	// to the host network namespace.
-	// See https://man7.org/linux/man-pages/man7/namespaces.7.html.
+	// Namespaces defines the Linux namespaces this container should execute in.
 	// +optional
-	NetworkNamespace *string `json:"networkNamespace,omitempty"`
+	Namespaces *Namespaces `json:"namespaces,omitempty"`
 }
 
 // Volume is a specification for mounting a volume in an action. Volumes take the form
@@ -71,6 +69,18 @@ type Action struct {
 // See https://docs.docker.com/storage/volumes/ for additional details.
 type Volume string
 
+// Namespace defines the Linux namespaces to use for the container.
+// See https://man7.org/linux/man-pages/man7/namespaces.7.html.
+type Namespaces struct {
+	// Network defines the network namespace.
+	// +optional
+	Network *string
+
+	// PID defines the PID namespace
+	// +optional
+	PID *int
+}
+
 // +kubebuilder:object:root=true
 // +kubebuilder:resource:categories=tinkerbell,shortName=tpl
 // +kubebuilder:unservedversion