Added OP_ENV_FILE to acceptance test, fixed lint/style error and added example .env.tpl documentation in README

Signed-off-by: Willi Carlsen <carlsenwilli@gmail.com>

.github/workflows/acceptance-test.yml

@@ -36,9 +36,9 @@ jobs:
         if: |
           github.event_name != 'repository_dispatch' &&
           (
-            github.ref == 'refs/heads/main' || 
+            github.ref == 'refs/heads/main' ||
             (
-              github.event_name == 'pull_request' && 
+              github.event_name == 'pull_request' &&
               github.event.pull_request.head.repo.full_name == github.repository
             )
           )
@@ -96,12 +96,14 @@ jobs:
           SECRET: ${{ inputs.secret }}
           SECRET_IN_SECTION: ${{ inputs.secret-in-section }}
           MULTILINE_SECRET: ${{ inputs.multiline-secret }}
+          OP_ENV_FILE: ./tests/.env.tpl
       - name: Assert test secret values [step output]
         if: ${{ !inputs.export-env }}
         env:
           SECRET: ${{ steps.load_secrets.outputs.SECRET }}
           SECRET_IN_SECTION: ${{ steps.load_secrets.outputs.SECRET_IN_SECTION }}
           MULTILINE_SECRET: ${{ steps.load_secrets.outputs.MULTILINE_SECRET }}
+          OP_ENV_FILE: ./tests/.env.tpl
         run: ./tests/assert-env-set.sh
       - name: Assert test secret values [exported env]
         if: ${{ inputs.export-env }}