feat: enable access to vault certificate

- puppet now automatically trusts vault certs for some clients
- ensure build job can access vault certs

.gitea/workflows/build.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: almalinux-8
     container:
       image: git.unkin.net/unkin/almalinux9-actionsdind:latest
-      options: --privileged
+      options: "--privileged --volume /etc/pki/tls/vault:/etc/pki/tls/vault:ro"
 
     steps:
       - name: Checkout code
@@ -29,4 +29,5 @@ jobs:
         env:
           VAULT_ROLEID: ${{ secrets.TERRAFORM_INCUS_VAULT_ROLEID }}
         run: |
+          ls -lh /etc/pki/tls/vault
           make plan