fix: tf acc test pipeline

.github/actions/acc_test/action.yaml

@@ -43,7 +43,7 @@ inputs:
   service_account_json_file_path:
     description: "STACKIT service account JSON file contents"
     required: true
-    default: '~/.stackit/credentials.json'
+    default: './service_account.json'
 
   test_file:
     description: "testfile to run"
@@ -130,7 +130,7 @@ runs:
       shell: bash
       run: |
         set -e
-          if [[ ! -f "${{ inputs.service_account_json_file_path }}" ]]; then
+          if [ ! -f "${{ inputs.service_account_json_file_path }}" ]; then
             echo "unable to find service account file '${{ inputs.service_account_json_file_path }}'"
             if [ -z "${{ inputs.service_account_json_content }}" ]; then
               echo "ERROR: service_account_json_file_content MUST NOT be empty if account file is missing"

.github/workflows/tf-acc-test.yaml

@@ -14,13 +14,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
-      - name: Create service account json file
-        shell: bash
-        run: |
-          set -e
-          echo "${{ secrets.TF_ACC_SERVICE_ACCOUNT_JSON }}" >~/service_account.json
-          cat ~/service_account.json
-
       - name: Run Test
         uses: ./.github/actions/acc_test
         with:
@@ -33,4 +26,4 @@ jobs:
           tf_acc_kek_key_ring_id: ${{ vars.TEST_KEK_KEY_RING_ID }}
           tf_acc_kek_key_version: ${{ vars.TEST_KEK_KEY_VERSION }}
           tf_acc_kek_service_account: ${{ vars.TEST_KEK_SERVICE_ACCOUNT }}
-          service_account_json_file_path: "~/service_account.json"
+          # service_account_json_file_path: "~/service_account.json"