5-implement-integrity-check-of-documents

Closes https://code.vereign.com/code/signing-service-java/issues/5

.gitlab-ci.yml

@@ -25,6 +25,7 @@ ppc64le:
   tags:
     - ppc64le
   script:
+    - printenv
     - docker pull registry.vereign.com/docker/vcl-build-base:buster
     - docker pull registry.vereign.com/docker/go-runtime:master
 #    - docker build --build-arg GITLAB_LOGIN=gitlab-ci-token --build-arg GITLAB_PASSWORD=$CI_JOB_TOKEN --pull -t $IMAGE -f Dockerfile .