fix docker warning when passing password

examples/CI_code_snippets/1.ex_CI_build_docker_container.md

@@ -23,7 +23,7 @@ build_docker:
     - echo $LAST_RELEASE
   script:
     - cd Docker  # You should have added before your Dockerfile in this dir
-    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - echo "$CI_REGISTRY_PASSWORD" | docker login -u "$CI_REGISTRY_USER" "$CI_REGISTRY" --password-stdin
     - docker build -t $CI_REGISTRY_IMAGE:$LAST_RELEASE .
     - docker push $CI_REGISTRY_IMAGE:$LAST_RELEASE
   only:

examples/CI_code_snippets/5.ex_CI_build_image_and_upload_OSSR.md

@@ -43,7 +43,7 @@ build_docker_image:
     - echo $LAST_RELEASE
   script:
     - cd Docker
-    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - echo "$CI_REGISTRY_PASSWORD" | docker login -u "$CI_REGISTRY_USER" "$CI_REGISTRY" --password-stdin
     - docker build -t $CI_REGISTRY_IMAGE:$LAST_RELEASE .
     - docker push $CI_REGISTRY_IMAGE:$LAST_RELEASE