👷(hackdays) publish the docker image

Publish the Docker images to deploy on a dedicated instance for the
Hackdays.

.github/workflows/docker-hub.yml

@@ -5,13 +5,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - 'main'
-    tags:
-      - 'v*'
-  pull_request:
-    branches:
-      - 'main'
-      - 'ci/trivy-fails'
+      - 'do-not-merge/hackathon-2025'
 
 env:
   DOCKER_USER: 1001:127
@@ -31,7 +25,6 @@ jobs:
           images: lasuite/impress-backend
       -
         name: Login to DockerHub
-        if: github.event_name != 'pull_request'
         run: echo "${{ secrets.DOCKER_HUB_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_HUB_USER }}" --password-stdin
       -
         name: Run trivy scan
@@ -46,7 +39,6 @@ jobs:
           context: .
           target: backend-production
           build-args: DOCKER_USER=${{ env.DOCKER_USER }}:-1000
-          push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
@@ -64,7 +56,6 @@ jobs:
           images: lasuite/impress-frontend
       -
         name: Login to DockerHub
-        if: github.event_name != 'pull_request'
         run: echo "${{ secrets.DOCKER_HUB_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_HUB_USER }}" --password-stdin
       -
         name: Run trivy scan
@@ -82,7 +73,6 @@ jobs:
           build-args: |
             DOCKER_USER=${{ env.DOCKER_USER }}:-1000
             PUBLISH_AS_MIT=false
-          push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
@@ -100,7 +90,6 @@ jobs:
           images: lasuite/impress-y-provider
       -
         name: Login to DockerHub
-        if: github.event_name != 'pull_request'
         run: echo "${{ secrets.DOCKER_HUB_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_HUB_USER }}" --password-stdin
       -
         name: Run trivy scan
@@ -116,7 +105,6 @@ jobs:
           file: ./src/frontend/servers/y-provider/Dockerfile
           target: y-provider
           build-args: DOCKER_USER=${{ env.DOCKER_USER }}:-1000
-          push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
@@ -125,7 +113,6 @@ jobs:
       - build-and-push-frontend
       - build-and-push-backend
     runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request'
     steps:
       - uses: numerique-gouv/action-argocd-webhook-notification@main
         id: notify