diff --git a/.github/workflows/build_images.yml b/.github/workflows/build_images.yml
index 47f4f33..ec1feed 100644
--- a/.github/workflows/build_images.yml
+++ b/.github/workflows/build_images.yml
@@ -16,7 +16,7 @@ on:
         default: ''
 jobs:
   build_docker_images:
-    runs-on: ubuntu-latest
+    runs-on: [self-hosted]
     steps:
       - uses: actions/checkout@v3
         with:
@@ -24,13 +24,6 @@ jobs:
       - name: Free Disk Space
         run: |
           ./free_disk_space.sh
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.10"
-      - name: Install dockeree
-        run: |
-          pip3 install dockeree
       - name: Login to DockerHub
         uses: docker/login-action@v3
         with:
diff --git a/.github/workflows/build_images_regular.yml b/.github/workflows/build_images_regular.yml
index 7d71cd2..250038f 100644
--- a/.github/workflows/build_images_regular.yml
+++ b/.github/workflows/build_images_regular.yml
@@ -4,7 +4,7 @@ on:
     - cron: '0 9 13 * *'
 jobs:
   build_docker_images_regularly:
-    runs-on: ubuntu-latest
+    runs-on: [self-hosted]
     permissions:
       issues: write
       pull-requests: write
@@ -16,13 +16,6 @@ jobs:
       - name: Free Disk Space
         run: |
           ./free_disk_space.sh
-      - name: Set up Python
-        uses: actions/setup-python@v2
-        with:
-          python-version: "3.10"
-      - name: Install dockeree
-        run: |
-          pip3 install dockeree
       - name: Login to DockerHub
         uses: docker/login-action@v3
         with:
diff --git a/.gitignore b/.gitignore
index f66eac7..b0aa5e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .DS_Store
+.jukit/
 graph.yaml
diff --git a/build_images.py b/build_images.py
index beba63c..c728255 100755
--- a/build_images.py
+++ b/build_images.py
@@ -1,4 +1,10 @@
-#!/usr/bin/env python3
+#!/usr/bin/env -S uv run
+# /// script
+# requires-python = "==3.13"
+# dependencies = [
+#     "dockeree",
+# ]
+# ///
 """Python script for building Docker images via GitHub Actions.
 """
 from argparse import ArgumentParser, Namespace
@@ -11,7 +17,7 @@
     "https://github.com/legendu-net/docker-rust-cicd": "",
     "https://github.com/legendu-net/docker-python-portable": "",
     "https://github.com/legendu-net/docker-vscode-server": "",
-    "https://github.com/legendu-net/docker-gitpod": "",
+    # "https://github.com/legendu-net/docker-gitpod": "",
     "https://github.com/legendu-net/docker-jupyterhub-pytorch": "",
     "https://github.com/legendu-net/docker-tensorboard": "",
     # "https://github.com/legendu-net/docker-conda-build": "",
@@ -73,3 +79,4 @@ def main() -> None:
 
 if __name__ == "__main__":
     main()
+