diff --git a/.github/workflows/build-publish-jenkins-image.yaml b/.github/workflows/build-publish-jenkins-image.yaml
index 0ece0c0..117f5f1 100644
--- a/.github/workflows/build-publish-jenkins-image.yaml
+++ b/.github/workflows/build-publish-jenkins-image.yaml
@@ -5,7 +5,7 @@ on:
 #      - main
   workflow_dispatch:
   schedule:
-    - cron: '0 0 5,20 * *'
+    - cron: '0 10 5,20 * *' # morning 10 am on 5th and 20th of every month
 
 permissions:
   contents: write
@@ -46,6 +46,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           push: true
+          file: jdk-11/Dockerfile
           platforms: linux/amd64,linux/arm64
           tags: |
             ${{ secrets.DOCKERHUB_USERNAME }}/jenkins-core-image:${{ env.NEW_VERSION }}
diff --git a/.github/workflows/build-publish-jenkins-jdk17-image.yaml b/.github/workflows/build-publish-jenkins-jdk17-image.yaml
index e16ee62..358783b 100644
--- a/.github/workflows/build-publish-jenkins-jdk17-image.yaml
+++ b/.github/workflows/build-publish-jenkins-jdk17-image.yaml
@@ -5,7 +5,7 @@ on:
 #      - main
   workflow_dispatch:
   schedule:
-    - cron: '0 0 5,20 * *'
+    - cron: '30 10 5,20 * *' # morning 10:30 am on 5th and 20th of every month
 
 permissions:
   contents: write
@@ -45,6 +45,7 @@ jobs:
 #          NEW_VERSION: $NEW_VERSION
         uses: docker/build-push-action@v5
         with:
+          file: jdk-17/Dockerfile
           push: true
           platforms: linux/amd64,linux/arm64
           tags: |
diff --git a/.github/workflows/build-publish-jenkins-jdk21-image.yaml b/.github/workflows/build-publish-jenkins-jdk21-image.yaml
index 98fa294..7635fa1 100644
--- a/.github/workflows/build-publish-jenkins-jdk21-image.yaml
+++ b/.github/workflows/build-publish-jenkins-jdk21-image.yaml
@@ -5,7 +5,7 @@ on:
 #      - main
   workflow_dispatch:
   schedule:
-    - cron: '0 0 5,20 * *'
+    - cron: '0 11 5,20 * *' # morning 11 am on 5th and 20th of every month
 
 permissions:
   contents: write
@@ -46,6 +46,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           push: true
+          file: jdk-21/Dockerfile
           platforms: linux/amd64,linux/arm64
           tags: |
             ${{ secrets.DOCKERHUB_USERNAME }}/jenkins-core-jdk21-image:${{ env.NEW_VERSION }}