fix: tf acc test pipeline

[skip ci]

.github/actions/acc_test/action.yaml

@@ -39,6 +39,12 @@ inputs:
   service_account_json_content:
     description: "STACKIT service account JSON file contents"
     required: true
+    default: ""
+
+  service_account_json_content_b64:
+    description: "STACKIT service account JSON file contents"
+    required: true
+    default: ""
 
   service_account_json_file_path:
     description: "STACKIT service account JSON file contents"
@@ -126,13 +132,12 @@ runs:
           ${{ steps.goenv.outputs.gomodcache }}
         key: ${{ runner.os }}-gopkg
 
-    - name: Ensure service account file exists
+    - name: Creating service_account file from json input
+      if: inputs.service_account_json_content != ''
       shell: bash
       run: |
         set -e
         set -x
-        
-        export PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
 
         jsonFile="${{ inputs.service_account_json_file_path }}"
         jsonFile="${jsonFile:-x}"
@@ -142,16 +147,31 @@ runs:
         fi
         
         if [ ! -f "${jsonFile}" ]; then
-          echo "unable to find service account file '${{ inputs.service_account_json_file_path }}'"
-          #if [ "${jsonFileContent:-x}" == "x" ]; then
-          #  echo "ERROR: service_account_json_file_content MUST NOT be empty if account file is missing"
-          #  exit 1
-          #fi
-          #echo "creating service account file '${{ inputs.service_account_json_file_path }}'"
+          echo "creating service account file '${{ inputs.service_account_json_file_path }}'"
           echo "${{ inputs.service_account_json_content }}" > stackit/"${{ inputs.service_account_json_file_path }}"
         fi
         ls -l stackit/"${{ inputs.service_account_json_file_path }}"
 
+    - name: Creating service_account file from base64 json input
+      if: inputs.service_account_json_content_b64 != ''
+      shell: bash
+      run: |
+        set -e
+        set -x
+
+        jsonFile="${{ inputs.service_account_json_file_path }}"
+        jsonFile="${jsonFile:-x}"
+        if [ "${jsonFile}" == "x" ]; then
+          echo "no service account file path provided"
+          exit 1
+        fi
+        
+        if [ ! -f "${jsonFile}" ]; then
+          echo "creating service account file '${{ inputs.service_account_json_file_path }}'"
+          echo "${{ inputs.service_account_json_content_b64 }}" | base64 -d > stackit/"${{ inputs.service_account_json_file_path }}"
+        fi
+        ls -l stackit/"${{ inputs.service_account_json_file_path }}"
+
     - name: Run acceptance test file
       if: ${{ inputs.test_file != '' }}
       shell: bash