Merge remote-tracking branch 'origin/update-duranta-ci' into develop

ci: remove first-time contributor job in workflow and update Jenkins job badges #147

- Remove the first-time contributor GitHub Actions workflow
- Update Jenkins image builder badge URLs to match the current job
  names.

The first-time contributor workflow posts an automated welcome message
through github-actions[bot], creating additional bot activity on pull
requests. Contributor onboarding information is better maintained
through project announcements and documentation, where it is easier to
update and more visible to new contributors.
Reviewed-by: Robert Schmidt <robert.schmidt@openairinterface.org>

.github/workflows/jenkins-dispatch.yml

@@ -105,20 +105,3 @@ jobs:
         run: gh pr edit ${{ github.event.pull_request.number }} --remove-label "${{ vars.RETRIGGER_CI_LABEL }}"
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-  welcome-first-time-contributor:
-    runs-on: ubuntu-24.04
-    if: github.event_name == 'pull_request_target' && github.event.action == 'opened'
-
-    steps:
-      - name: Post welcome message
-        uses: actions/first-interaction@v1
-        with:
-          repo-token: ${{ secrets.GITHUB_TOKEN }}
-          pr-message: |
-            Welcome @${{ github.event.pull_request.user.login }}! Thanks for opening your first PR in this project!
-
-            Here are a few things to help you get started:
-            - Read the [Contributing Guide](https://github.com/${{ github.repository }}/blob/develop/CONTRIBUTING.md) to understand our development process.
-            - Check the [issues page](https://github.com/duranta-project/openairinterface5g/issues) to see if your PR is related to an existing issue.
-            - Add a [label](https://github.com/duranta-project/openairinterface5g/labels/) to categorize your PR so reviewers can triage it faster.

README.md

@@ -14,8 +14,8 @@
 </p>
 
 <p align="center">
-    <a href="https://jenkins-oai.eurecom.fr/job/RAN-Ubuntu18-Image-Builder/"><img src="https://img.shields.io/jenkins/build?jobUrl=https%3A%2F%2Fjenkins-oai.eurecom.fr%2Fjob%2FRAN-Ubuntu18-Image-Builder%2F&label=build-Ubuntu-x86%20Images"></a>
-    <a href="https://jenkins-oai.eurecom.fr/job/RAN-RHEL8-Cluster-Image-Builder/"><img src="https://img.shields.io/jenkins/build?jobUrl=https%3A%2F%2Fjenkins-oai.eurecom.fr%2Fjob%2FRAN-RHEL8-Cluster-Image-Builder%2F&label=build-UBI-x86%20Images"></a>
+    <a href="https://jenkins-oai.eurecom.fr/job/RAN-Ubuntu-Image-Builder/"><img src="https://img.shields.io/jenkins/build?jobUrl=https%3A%2F%2Fjenkins-oai.eurecom.fr%2Fjob%2FRAN-Ubuntu-Image-Builder%2F&label=build-Ubuntu-x86%20Images"></a>
+    <a href="https://jenkins-oai.eurecom.fr/job/RAN-RHEL-Cluster-Image-Builder/"><img src="https://img.shields.io/jenkins/build?jobUrl=https%3A%2F%2Fjenkins-oai.eurecom.fr%2Fjob%2FRAN-RHEL-Cluster-Image-Builder%2F&label=build-RHEL-Cluster%20Images"></a>
     <a href="https://jenkins-oai.eurecom.fr/job/RAN-Ubuntu-ARM-Image-Builder/"><img src="https://img.shields.io/jenkins/build?jobUrl=https%3A%2F%2Fjenkins-oai.eurecom.fr%2Fjob%2FRAN-Ubuntu-ARM-Image-Builder%2F&label=build-Ubuntu-ARM%20Images"></a>
 </p>