diff --git a/.github/action-build/Dockerfile b/.github/action-build/Dockerfile
new file mode 100644
index 0000000..b1fd227
--- /dev/null
+++ b/.github/action-build/Dockerfile
@@ -0,0 +1,5 @@
+FROM python
+
+
+COPY entrypoint /usr/local/bin/entrypoint
+ENTRYPOINT ["/usr/local/bin/entrypoint"]
\ No newline at end of file
diff --git a/.github/action-build/action.yml b/.github/action-build/action.yml
new file mode 100644
index 0000000..49eb252
--- /dev/null
+++ b/.github/action-build/action.yml
@@ -0,0 +1,6 @@
+name: Action Build
+description: build holidays.json
+
+runs:
+  using: docker
+  image: Dockerfile
diff --git a/.github/action-build/entrypoint b/.github/action-build/entrypoint
new file mode 100644
index 0000000..5edff67
--- /dev/null
+++ b/.github/action-build/entrypoint
@@ -0,0 +1,3 @@
+#!/usr/bin/env sh
+
+python build.py
\ No newline at end of file
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..4a6a02a
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,18 @@
+name: Workflow build
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v1
+      - name: build
+        uses: ./.github/action-build/
+      - name: commit changes
+        uses: EndBug/add-and-commit@v4
+        with:
+          message: "[Workflow] build"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 091429a..e18bf37 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
 
-name: build
+name: Test
 
 on:
   push:
@@ -34,6 +34,6 @@ jobs:
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-    - name: Test with pytest
+    - name: build holidays.json
       run: |
         python test.py
diff --git a/README.md b/README.md
index 0dc44ba..80acc75 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,19 @@
-[![status workflow](https://github.com/guangrei/APIHariLibur_V2/actions/workflows/python-app.yml/badge.svg)](https://github.com/guangrei/APIHariLibur_V2/actions)
+[![status workflow](https://github.com/guangrei/APIHariLibur_V2/actions/workflows/build.yml/badge.svg)](https://github.com/guangrei/APIHariLibur_V2/actions)
 
 APIHariLibur_V2 adalah peningkatan dari api [Json Indonesia holiday](https://github.com/guangrei/Json-Indonesia-holidays).
 
 data masih bersumber dari google calendar dan otomatis diperbarui.
 
+## Hari Libur + Perayaan
+
 calendar.json: https://raw.githubusercontent.com/guangrei/APIHariLibur_V2/main/calendar.json
 
 calendar.min.json: https://raw.githubusercontent.com/guangrei/APIHariLibur_V2/main/calendar.min.json
 
+## Hari Libur only
+
+holidays.json: https://raw.githubusercontent.com/guangrei/APIHariLibur_V2/main/holidays.json
+
 ### Showcase 
 
 - [pytanggalmerah](https://github.com/guangrei/pytanggalmerah) (lib python)
diff --git a/build.py b/build.py
new file mode 100644
index 0000000..b8f226e
--- /dev/null
+++ b/build.py
@@ -0,0 +1,52 @@
+#-*-coding:utf8;-*-
+import json
+from datetime import datetime
+
+# Informasi kredit tentang kode
+credit = {
+    "updated": datetime.now().strftime("%Y%m%d %H:%I:%S"),
+    "author": "guangrei",
+    "link": "https://github.com/guangrei"}
+
+# Membaca konten dari file "calendar.json" dan menguraikannya menjadi bentuk dictionary Python
+with open("calendar.json", "r") as f:
+    js = json.loads(f.read())
+
+# Menghapus kunci "info" dari dictionary "js"
+del js["info"]
+out = {}
+
+
+def get_holiday(des, sum):
+    """
+    Fungsi untuk mendapatkan hari libur dari deskripsi dan ringkasan yang diberikan.
+
+    Parameters:
+        des (list): Daftar deskripsi yang berisi kata "libur" atau tidak.
+        sum (list): Daftar ringkasan hari yang sesuai dengan deskripsi.
+
+    Returns:
+        str: Ringkasan hari libur jika ditemukan, jika tidak kembali None.
+    """
+    i = 0
+    for cek in des:
+        if "libur" in cek.lower():
+            return sum[i]
+        else:
+            i = i + 1
+
+
+# Iterasi melalui setiap kunci dan nilai dalam dictionary "js"
+for k, v in js.items():
+    if v["holiday"]:
+        out[k] = {}
+        # Mendapatkan ringkasan hari libur menggunakan fungsi get_holiday
+        out[k]["summary"] = get_holiday(v["description"], v["summary"])
+
+# Menambahkan informasi kredit ke dictionary "out"
+out["info"] = credit
+
+# Mengkonversi dictionary "out" menjadi format JSON dan menyimpannya di file "holidays.json"
+s = json.dumps(out, sort_keys=True)
+with open("holidays.json", "w") as f:
+    f.write(s)