✨ feat(deploy): iac/ Vault provisioning + workflow (uses app_roles module from tools)

.gitea/workflows/vault.yaml

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+---
+name: Hashicorp Vault
+
+on:
+  workflow_dispatch: {}
+  push: &vaultPaths
+    paths:
+      - 'iac/*.tf'
+  pull_request: *vaultPaths
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+.vault_step: &vault_step
+  name: read vault secret
+  uses: https://gitea.arcodange.lab/arcodange-org/vault-action.git@main
+  id: vault-secrets
+  with:
+    url: https://vault.arcodange.lab
+    caCertificate: ${{ secrets.HOMELAB_CA_CERT }}
+    jwtGiteaOIDC: ${{ needs.gitea_vault_auth.outputs.gitea_vault_jwt }}
+    role: gitea_cicd_dance-lessons-coach
+    method: jwt
+    path: gitea_jwt
+    secrets: |
+        kvv1/google/credentials credentials | GOOGLE_BACKEND_CREDENTIALS ;
+
+jobs:
+  gitea_vault_auth:
+    name: Auth with gitea for vault
+    runs-on: ubuntu-latest-ca
+    outputs:
+      gitea_vault_jwt: ${{steps.gitea_vault_jwt.outputs.id_token}}
+    steps:
+      - name: Auth with gitea for vault
+        id: gitea_vault_jwt
+        run: |
+          echo -n "${{ secrets.vault_oauth__sh_b64 }}" | base64 -d | bash
+
+  tofu:
+    name: Tofu - Vault
+    needs:
+      - gitea_vault_auth
+    runs-on: ubuntu-latest-ca
+    env:
+      OPENTOFU_VERSION: 1.8.2
+      TERRAFORM_VAULT_AUTH_JWT: ${{ needs.gitea_vault_auth.outputs.gitea_vault_jwt }}
+      VAULT_CACERT: "${{ github.workspace }}/homelab.pem"
+    steps:
+      - *vault_step
+      - uses: actions/checkout@v4
+      - name: prepare vault self signed cert
+        run: echo -n "${{ secrets.HOMELAB_CA_CERT }}" | base64 -d > $VAULT_CACERT
+      - name: terraform apply
+        uses: dflook/terraform-apply@v1
+        with:
+          path: iac
+          auto_approve: true

iac/backend.tf

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+terraform {
+  backend "gcs" {
+    bucket = "arcodange-tf"
+    prefix = "dance-lessons-coach/main"
+  }
+}

iac/main.tf

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+locals {
+  app = {
+    name = "dance-lessons-coach"
+  }
+}
+
+module "app_roles" {
+  source = "git::ssh://git@192.168.1.202:2222/arcodange-org/tools.git//hashicorp-vault/iac/modules/app_roles?depth=1&ref=main"
+  name   = local.app.name
+}

iac/providers.tf

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+terraform {
+  required_providers {
+    vault = {
+      source  = "vault"
+      version = "4.4.0"
+    }
+  }
+}
+
+provider "vault" {
+  address = "https://vault.arcodange.lab"
+  auth_login_jwt {
+    # TERRAFORM_VAULT_AUTH_JWT environment variable, set by the gitea OIDC step
+    mount = "gitea_jwt"
+    role  = "gitea_cicd_dance-lessons-coach"
+  }
+}