chore: move to export pg connection string

.github/workflows/infra-build.yml

@@ -28,7 +28,6 @@ jobs:
           proxmox_api_token_secret = "${{ secrets.PVE_API_TOKEN_SECRET }}"
           ssh_key = "${{ secrets.SSH_PRIVATE_KEY }}"
           passphrase = "${{ secrets.SSH_PASSPHRASE }}"
-          PG_CONN_STR = "${{ secrets.PG_CONN_STR }}"
           EOF
       
       - name: Setup Opentofu
@@ -46,6 +45,7 @@ jobs:
       - name: Opentofu Plan
         id: plan
         run: |
+          export PG_CONN_STR="${{ secrets.PG_CONN_STR }}"
           tofu plan -out=tfplan -detailed-exitcode
 
       - name: Opentofu Apply

provider.tf

@@ -11,9 +11,7 @@ terraform {
     }
   }
 
-  backend "pg" {
-    conn_str = var.PG_CONN_STR
-  }
+  backend "pg" {}
   encryption {
     key_provider "pbkdf2" "mykey" {
       passphrase    = var.passphrase
@@ -66,11 +64,6 @@ variable "passphrase" {
   sensitive = true
 }
 
-variable "PG_CONN_STR" {
-  type      = string
-  sensitive = true
-}
-
 provider "proxmox" {
   pm_api_url  = var.proxmox_api_url
   pm_user     = "root@pam"