diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d782ac5e8..e5f6c0e65 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -42,7 +42,8 @@ build-ci-builder:
       allow_failure: true
   before_script:
     - mkdir -p /kaniko/.docker
-    - echo "{\"auths\":{\"${INTERNAL_REGISTRY}\":{\"auth\":\"$(printf '%s:%s' \"${CI_REGISTRY_USER}\" \"${CI_REGISTRY_PASSWORD}\" | base64 | tr -d '\\n')\"}}}" > /kaniko/.docker/config.json
+    - AUTH=$(echo -n "${CI_REGISTRY_USER}:${CI_REGISTRY_PASSWORD}" | base64 | tr -d '\n')
+    - echo "{\"auths\":{\"${INTERNAL_REGISTRY}\":{\"username\":\"${CI_REGISTRY_USER}\",\"password\":\"${CI_REGISTRY_PASSWORD}\"}}}" > /kaniko/.docker/config.json
   script:
     - /kaniko/executor
       --context "${CI_PROJECT_DIR}"
@@ -101,7 +102,8 @@ test:
     - if: $CI_COMMIT_BRANCH == "main" && $CI_PIPELINE_SOURCE == "push"
   before_script:
     - mkdir -p /kaniko/.docker
-    - echo "{\"auths\":{\"${INTERNAL_REGISTRY}\":{\"auth\":\"$(printf '%s:%s' \"${CI_REGISTRY_USER}\" \"${CI_REGISTRY_PASSWORD}\" | base64 | tr -d '\\n')\"}}}" > /kaniko/.docker/config.json
+    - AUTH=$(echo -n "${CI_REGISTRY_USER}:${CI_REGISTRY_PASSWORD}" | base64 | tr -d '\n')
+    - echo "{\"auths\":{\"${INTERNAL_REGISTRY}\":{\"username\":\"${CI_REGISTRY_USER}\",\"password\":\"${CI_REGISTRY_PASSWORD}\"}}}" > /kaniko/.docker/config.json
 
 build-trading-service:
   extends: .kaniko-base