diff --git a/.gitea/workflows/cd.yaml b/.gitea/workflows/cd.yaml
new file mode 100644
index 0000000..8953bb9
--- /dev/null
+++ b/.gitea/workflows/cd.yaml
@@ -0,0 +1,18 @@
+name: CD
+on:
+  push:
+    branches:
+    - master
+jobs:
+  docker-build:
+    name: 部屬映像檔
+    runs-on: ubuntu
+    steps:
+    - name: 部屬 Codex
+      uses: https://gitea.jsc.idv.tw/actions/docker-build@${{ vars.ACTION_DOCKER_BUILD_VERSION }}
+      with:
+        REGISTRY_USERNAME: ${{ gitea.repository_owner }}
+        REGISTRY_PASSWORD: ${{ secrets.TOKEN }}
+        IMAGE_OWNER: ${{ gitea.repository_owner }}
+        IMAGE_NAME: codex
+        RELEASE_VERSION: latest
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..4c1f4ba
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,15 @@
+FROM ubuntu:latest
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt update \
+    && apt install -y --no-install-recommends \
+        ca-certificates \
+        nodejs \
+        npm \
+    && npm install -g @openai/codex \
+    && apt clean \
+    && rm -rf /var/lib/apt/lists/*
+
+CMD ["codex", "--version"]
+