feat: add DockerHub authentication to prevent rate limiting

- Add dockerhub-secret.yaml with DockerHub credentials for Jenkins agents
- Configure imagePullSecrets in all pipeline pod templates to use dockerhub-secret
- This prevents DockerHub rate limiting when pulling base images during CI/CD builds

first-class-pipeline/pipeline/dockerhub-secret.yaml

@@ -0,0 +1,12 @@
+# This Secret is used by jenkins-agent to authenticate with DockerHub when pulling images to avoid rate limiting
+apiVersion: v1
+kind: Secret
+metadata:
+  creationTimestamp: "2025-10-16T04:37:44Z"
+  name: dockerhub-secret
+  namespace: freeleaps-devops-system
+  resourceVersion: "151921537"
+  uid: 07532bf6-57dc-4da0-a6e7-93a5ad3b0149
+type: kubernetes.io/dockerconfigjson
+data:
+  .dockerconfigjson: eyJhdXRocyI6eyJodHRwczovL2luZGV4LmRvY2tlci5pby92MS8iOnsidXNlcm5hbWUiOiJkZXZvcHNAbWF0aG1hc3QuY29tIiwicGFzc3dvcmQiOiJGcmVlbGVhcHNAMjAyNSIsImVtYWlsIjoiZGV2b3BzQG1hdGhtYXN0LmNvbSIsImF1dGgiOiJaR1YyYjNCelFHMWhkR2h0WVhOMExtTnZiVHBHY21WbGJHVmhjSE5BTWpBeU5RPT0ifX19

first-class-pipeline/vars/executeFreeleapsPipeline.groovy

@@ -54,6 +54,8 @@ def generateComponentStages(component, configurations) {
 apiVersion: v1
 kind: Pod
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -148,6 +150,8 @@ spec:
 apiVersion: v1
 kind: Pod
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -252,6 +256,8 @@ spec:
 apiVersion: v1
 kind: Pod
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -311,6 +317,8 @@ spec:
 apiVersion: v1
 kind: Pod
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -372,6 +380,8 @@ spec:
 apiVersion: v1
 kind: Pod
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -491,6 +501,8 @@ spec:
 apiVersion: v1
 kind: Pod
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -585,6 +597,8 @@ spec:
 apiVersion: v1
 kind: Pod
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution:
@@ -661,6 +675,8 @@ metadata:
   labels:
     freeleaps-devops-system/milestone: commit-message-linting
 spec:
+  imagePullSecrets:
+  - name: dockerhub-secret
   affinity:
     nodeAffinity:
       requiredDuringSchedulingIgnoredDuringExecution: