diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2627099..f273eda 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,16 +12,8 @@ build:
     name: gcr.io/kaniko-project/executor:v1.14.0-debug
     entrypoint: [""]
   script:
-    - |
-      cat << EOF > /kaniko/.docker/config.json
-      {
-          "auths": {
-              "https://registry.yaemiku.dev": {
-                  "auth": "${DOCKER_PASSWORD}"
-              }
-          }
-      }
-      EOF
+    - mkdir -p /kaniko/.docker
+    - echo "{\"auths\":{\"registry.yaemiku.dev\":{\"auth\":\"$DOCKER_PASSWORD\"}}}" > /kaniko/.docker/config.json
     - /kaniko/executor
       --context "${CI_PROJECT_DIR}"
       --dockerfile "${CI_PROJECT_DIR}/Dockerfile"