chore: don't use GHA secrets anymore

Author: karouf

.github/workflows/docker_push.yml

@@ -13,15 +13,20 @@ jobs:
   docker_push:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v4
+
+      - name: Load Secrets
+        uses: doctolib/actions/load-secrets@main
+        with:
+          prefix_secrets: true
+
       - name: Configure AWS
         uses: aws-actions/configure-aws-credentials@010d0da01d0b5a38af31e9c3470dbfdabdecca3a # v 4.0.1
         with:
-          role-to-assume: ${{ secrets.iam_role }}
+          role-to-assume: ${{ env.VAULT_SECRET_IAM_ROLE }}
           role-session-name: docker_build_public
           aws-region: us-east-1
 
-      - uses: actions/checkout@v4
-
       - run: |
           aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws/doctolib
           cd neurow