diff --git a/.woodpecker.yml b/.woodpecker.yml
index 34be556..0cefeec 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -1,19 +1,15 @@
 steps:
   build:
-    image: node:20
+    # image: node:20
+    image: oven/bun:1
     commands:
-      - npm install -g pnpm
-      #   - cd /tmp
-      #   - rm -rf astro
-      #   - git clone https://git.mzhang.io/michael/astro --depth 1
-      #   - cd astro
-      #   - pnpm install
-      #   - pnpm run build
-      #   - cd /woodpecker/src/git.mzhang.io/michael/blog
-      - pnpm install
-      #   - pnpm link /tmp/astro/packages/astro
-      #   - pnpm link /tmp/astro/packages/markdown/remark
-      - pnpm run build
+    #   - npm install -g pnpm
+    #   - pnpm install
+    #   - pnpm run build
+      - bun install --frozen-lockfile
+      - bun run build
+    when:
+      - event: push
 
   deploy:
     image: alpine
@@ -26,4 +22,5 @@ steps:
       - rsync -azrP -e "ssh -i SSH_SECRET_KEY" dist/ blogDeploy@mzhang.io:/home/blogDeploy/public
     secrets: [SSH_SECRET_KEY]
     when:
-      branch: master
+      - branch: master
+        event: push
diff --git a/bun.lockb b/bun.lockb
new file mode 100755
index 0000000..e755160
Binary files /dev/null and b/bun.lockb differ
diff --git a/docker/builder.nix b/docker/builder.nix
new file mode 100644
index 0000000..97b0a8a
--- /dev/null
+++ b/docker/builder.nix
@@ -0,0 +1,12 @@
+{ pkgs ? import <nixpkgs> { }
+}:
+
+
+pkgs.dockerTools.buildImage {
+  name = "hello-docker";
+  config = {
+    Cmd = [ "${pkgs.hello}/bin/hello" ];
+    Env = [
+      "PATH=${pkgs.agda.withPackages (p: with p; { standard-library })}" ];
+  };
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..0b5f22b
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,10 @@
+{
+  outputs = { self, nixpkgs, flake-utils }: flake-utils.lib.eachDefaultSystem (system:
+    let
+      pkgs = import nixpkgs { inherit system; };
+      flakePkgs = { builder = pkgs.callPackage ./docker/builder.nix { }; };
+    in
+    {
+      packages = flake-utils.lib.flattenTree flakePkgs;
+    });
+}
diff --git a/package.json b/package.json
index d094b25..d90e78c 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "prettier-plugin-astro": "^0.12.0",
     "rehype-slug": "^6.0.0",
     "sass": "^1.66.1",
-    "sharp": "^0.32.6",
+    "sharp": "^0.33.4",
     "shiki": "^0.14.5",
     "unified": "^11.0.2",
     "unist-util-visit": "^5.0.0"