fix: parallelize Rancher child image warmup

.gitea/workflows/deploy.yml

@@ -637,11 +637,25 @@ jobs:
           pull_image_on_all_nodes() {
             local image="$1"
             local ips
+            local pids=""
+            local failed=false
             ips="$(python3 -c 'import json; outputs=json.load(open("outputs/terraform_outputs.json")); print(" ".join(outputs["control_plane_ips"]["value"] + outputs["worker_ips"]["value"]))')"
 
             for ip in ${ips}; do
-              pull_image_on_node "${image}" "${ip}" 45 10
+              pull_image_on_node "${image}" "${ip}" 30 10 &
+              pids="${pids} $!"
             done
+
+            for pid in ${pids}; do
+              if ! wait "${pid}"; then
+                failed=true
+              fi
+            done
+
+            if [ "${failed}" = "true" ]; then
+              echo "Failed to pre-pull required Rancher image ${image} on one or more nodes" >&2
+              exit 1
+            fi
           }
 
           echo "Waiting for Rancher..."
@@ -650,7 +664,6 @@ jobs:
           wait_for_resource flux-system helmrelease.helm.toolkit.fluxcd.io/rancher 600
           reconcile_helmrelease rancher
           wait_for_helmchart_ready flux-system-rancher rancher 180s 5
-          pull_image_on_all_nodes rancher/rancher:v2.13.3
           pull_image_on_all_nodes rancher/shell:v0.6.2
           pull_image_on_all_nodes rancher/rancher-webhook:v0.9.3
           pull_image_on_all_nodes rancher/system-upgrade-controller:v0.17.0