diff --git a/tasks/docker-registry/task.yaml b/tasks/docker-registry/task.yaml
index aa9a764..3154aa8 100644
--- a/tasks/docker-registry/task.yaml
+++ b/tasks/docker-registry/task.yaml
@@ -8,32 +8,40 @@ spec:
       type: string
       description: Subdirectory within the repo where the source code is located
       default: ""
+
     - name: imageName
-      description: Base image name with registry
+      description: Base image name with registry (e.g. docker.unbox-x.net/registry/unbox-x-aisi-cron-app)
       type: string
+
     - name: tag
-      description: Version tag to apply to the image
+      description: Version tag to apply to the image (e.g. v0.2.0)
       type: string
+
     - name: dockerfile
       description: Path to Dockerfile
       type: string
       default: ./Dockerfile
+
     - name: context
       description: Build context path (relative to subdirectory)
       type: string
       default: .
+
   workspaces:
     - name: source
       description: Source code workspace
+
     - name: docker-auth
       description: Docker registry credentials (username + password)
+
     - name: pypi-auth
-      description: PyPI registry credentials (username + password)
+      description: PyPI credentials (username + password)
+
   results:
     - name: imageUrl
-      description: Final pushed image URL with tag
+      description: Final pushed image URL with tag (e.g. registry/app:v0.2.0)
+
   steps:
-    # 🔐 인증 정보 생성
     - name: write-docker-config
       image: alpine:3.21.3
       workingDir: /workspace/source
@@ -55,48 +63,33 @@ spec:
 
         echo "🔐 Writing Docker config for $REGISTRY..."
         mkdir -p /tekton/home/.docker
-        cat > /tekton/home/.docker/config.json <<EOF
-        {
-          "auths": {
-            "$REGISTRY": {
-              "auth": "$(echo -n "$USERNAME:$PASSWORD" | base64)"
-            }
-          }
-        }
-        EOF
+        echo "{\"auths\": {\"$REGISTRY\": {\"auth\": \"$(echo -n "$USERNAME:$PASSWORD" | base64)"}}}" \
+          > /tekton/home/.docker/config.json
 
-        # PyPI 인증 정보 변수 정의
-        echo "🔐 Setting PyPI auth env..."
-        PYPI_USERNAME=$(cat /workspace/pypi-auth/username)
-        PYPI_PASSWORD=$(cat /workspace/pypi-auth/password)
-        echo "export PYPI_USERNAME=$PYPI_USERNAME" > /tekton/home/pypi-auth.env
-        echo "export PYPI_PASSWORD=$PYPI_PASSWORD" >> /tekton/home/pypi-auth.env
-
-    # 🏗️ Kaniko 공식 이미지 실행
     - name: kaniko-build
-      image: gcr.io/kaniko-project/executor:v1.23.2
+      image: bitnami/kaniko:1.23.2
       workingDir: /workspace/source
       env:
         - name: DOCKER_CONFIG
           value: /tekton/home/.docker
-        - name: PYPI_USERNAME
-          valueFrom:
-            configMapKeyRef:
-              name: pypi-auth-config
-              key: username
-              optional: true
-        - name: PYPI_PASSWORD
-          valueFrom:
-            configMapKeyRef:
-              name: pypi-auth-config
-              key: password
-              optional: true
-      args:
-        - --dockerfile=$(params.subdirectory)/$(params.dockerfile)
-        - --context=$(params.subdirectory)/$(params.context)
-        - --destination=$(params.imageName):$(params.tag)
-        - --skip-tls-verify
-        - --reproducible
-        - --verbosity=debug
-        - --build-arg=PYPI_USERNAME=$(env PYPI_USERNAME)
-        - --build-arg=PYPI_PASSWORD=$(env PYPI_PASSWORD)
\ No newline at end of file
+      script: |
+        #!/bin/sh
+        set -e
+
+        if [ -n "$(params.subdirectory)" ]; then
+          cd "$(params.subdirectory)"
+        fi
+
+        PYPI_USERNAME=$(cat /workspace/pypi-auth/username)
+        PYPI_PASSWORD=$(cat /workspace/pypi-auth/password)
+
+        echo "🚀 Running bitnami/kaniko build..."
+        /kaniko/executor \
+          --dockerfile=$(params.dockerfile) \
+          --context=$(params.context) \
+          --destination=$(params.imageName):$(params.tag) \
+          --skip-tls-verify \
+          --reproducible \
+          --verbosity=info \
+          --build-arg PYPI_USERNAME=$PYPI_USERNAME \
+          --build-arg PYPI_PASSWORD=$PYPI_PASSWORD