diff --git a/internal/README.md b/internal/README.md
deleted file mode 100644
index 5da25f65..00000000
--- a/internal/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Stuff to help with building Docker images. You probably don't want to use anything in here.
diff --git a/internal/docker-stacks-webhook/conda_requirements.txt b/internal/docker-stacks-webhook/conda_requirements.txt
deleted file mode 100644
index 6e5c509d..00000000
--- a/internal/docker-stacks-webhook/conda_requirements.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-# Copyright (c) Jupyter Development Team.
-# Distributed under the terms of the Modified BSD License.
-# NOTE: jupyter_kernel_gateway uses the notebook package. We get a
-# speed up if we pre-install the notebook package using conda since
-# we'll get prebuilt binaries for all its dependencies like pyzmq.
-notebook==4.1
diff --git a/internal/docker-stacks-webhook/docker-stacks-webhook.ipynb b/internal/docker-stacks-webhook/docker-stacks-webhook.ipynb
deleted file mode 100644
index b48c8b62..00000000
--- a/internal/docker-stacks-webhook/docker-stacks-webhook.ipynb
+++ /dev/null
@@ -1,383 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# docker-stacks wiki webhook\n",
-    "\n",
-    "Listens for webhook callbacks from Docker Hub. Updates the [docker build history](https://github.com/jupyter/docker-stacks/wiki/Docker-build-history) wiki page in response to completed builds.\n",
-    "\n",
-    "References:\n",
-    "\n",
-    "* https://docs.docker.com/docker-hub/webhooks/\n"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "import json\n",
-    "import datetime as dt\n",
-    "import requests\n",
-    "import os"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Read credentials from the environment."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "GH_USERNAME = os.getenv('GH_USERNAME')\n",
-    "GH_TOKEN = os.getenv('GH_TOKEN')"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Configure git upfront."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": [
-    "%%bash\n",
-    "git config --global user.email \"jupyter@googlegroups.com\"\n",
-    "git config --global user.name \"Jupyter Development Team\""
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Build the templates we need."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "wiki_git_tmpl = 'https://{GH_USERNAME}:{GH_TOKEN}@github.com/jupyter/docker-stacks.wiki.git'\n",
-    "commit_url_tmpl = 'https://github.com/jupyter/docker-stacks/commit/{sha}'\n",
-    "row_tmpl = '|{pushed_at}|[{sha}]({commit_url})|{commit_msg}|\\n'\n",
-    "api_commit_url_tmpl = 'https://api.github.com/repos/jupyter/docker-stacks/commits/{sha}'"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": [
-    "REQUEST = json.dumps({\n",
-    "    'body' : {\n",
-    "       \"push_data\": {\n",
-    "          \"pushed_at\": 1449017033,\n",
-    "          \"images\": [],\n",
-    "          \"tag\": \"9f9907cf1df8\",\n",
-    "          \"pusher\": \"biscarch\"\n",
-    "       },\n",
-    "       \"callback_url\": \"https://registry.hub.docker.com/u/biscarch/webhook-tester-repo/hook/2i5e3gj1bi354asb3f05gchi4ccjg0gas/\",\n",
-    "       \"repository\": {\n",
-    "          \"status\": \"Active\",\n",
-    "          \"description\": \"\",\n",
-    "          \"is_trusted\": False,\n",
-    "          \"full_description\": None,\n",
-    "          \"repo_url\": \"https://registry.hub.docker.com/u/biscarch/webhook-tester-repo/\",\n",
-    "          \"owner\": \"biscarch\",\n",
-    "          \"is_official\": False,\n",
-    "          \"is_private\": False,\n",
-    "          \"name\": \"webhook-tester-repo\",\n",
-    "          \"namespace\": \"biscarch\",\n",
-    "          \"star_count\": 0,\n",
-    "          \"comment_count\": 0,\n",
-    "          \"date_created\": 1449016916,\n",
-    "          \"repo_name\": \"biscarch/webhook-tester-repo\"\n",
-    "       }\n",
-    "    }\n",
-    "})"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Read values we need out of the request body."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "body = json.loads(REQUEST)['body']\n",
-    "\n",
-    "tag = body['push_data']['tag']\n",
-    "pushed_at_ts = body['push_data']['pushed_at']\n",
-    "callback_url = body['callback_url']"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Validate the request by seeing if the tag is a valid SHA in the docker-stacks repo."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "commit_resp = requests.get(api_commit_url_tmpl.format(sha=tag))\n",
-    "try:\n",
-    "    commit_resp.raise_for_status()\n",
-    "except Exception as ex:\n",
-    "    requests.post(callback_url, json={\n",
-    "        'state': 'failure',\n",
-    "        'description': 'request does not contain a valid sha',\n",
-    "        'context' : 'docker-stacks-webhook',\n",
-    "        'target_url' : 'https://github.com/jupyter/docker-stacks/wiki/Docker-build-history'\n",
-    "    })\n",
-    "    raise ex"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Get a fresh clone of the wiki git repo."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "wiki_git = wiki_git_tmpl.format(GH_USERNAME=GH_USERNAME, GH_TOKEN=GH_TOKEN)\n",
-    "\n",
-    "!rm -rf docker-stacks.wiki\n",
-    "!git clone $wiki_git"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Read the build page markdown."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "with open('docker-stacks.wiki/Docker-build-history.md') as f:\n",
-    "    lines = f.readlines()"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Find the start of the table."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "for table_top_i, line in enumerate(lines):\n",
-    "    if line.startswith('|--'):\n",
-    "        break\n",
-    "else:\n",
-    "    requests.post(callback_url, json={\n",
-    "        'state': 'failure',\n",
-    "        'description': 'could not locate table on wiki page',\n",
-    "        'context' : 'docker-stacks-webhook',\n",
-    "        'target_url' : 'https://github.com/jupyter/docker-stacks/wiki/Docker-build-history'\n",
-    "    })\n",
-    "    raise RuntimeError('wiki table missing')"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Format the text we want to put into the wiki table row."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "pushed_at_dt = dt.datetime.fromtimestamp(pushed_at_ts)\n",
-    "pushed_at = pushed_at_dt.strftime('%b. %d, %Y')\n",
-    "commit_url = commit_url_tmpl.format(sha=tag)\n",
-    "commit_msg = commit_resp.json()['commit']['message'].replace('\\n', ' ')\n",
-    "row = row_tmpl.format(pushed_at=pushed_at, sha=tag, commit_url=commit_url, commit_msg=commit_msg)\n",
-    "row"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Insert the table row."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "lines.insert(table_top_i+1, row)"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Write the file back out."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "with open('docker-stacks.wiki/Docker-build-history.md', 'w') as f:\n",
-    "    f.writelines(lines)"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Commit and push."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "!cd docker-stacks.wiki/ && \\\n",
-    "    git add -A && \\\n",
-    "    git commit -m 'Add build $tag' && \\\n",
-    "    git push origin master"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Tell Docker Hub we succeeded."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "collapsed": false
-   },
-   "outputs": [],
-   "source": [
-    "# POST /tag\n",
-    "resp = requests.post(callback_url, json={\n",
-    "    'state': 'success',\n",
-    "    'description': 'updated docker-stacks wiki build page',\n",
-    "    'context' : 'docker-stacks-webhook',\n",
-    "    'target_url' : 'https://github.com/jupyter/docker-stacks/wiki/Docker-build-history'\n",
-    "})\n",
-    "\n",
-    "print(resp.status_code)"
-   ]
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.5.1"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 0
-}
diff --git a/internal/docker-stacks-webhook/manifest.yml b/internal/docker-stacks-webhook/manifest.yml
deleted file mode 100644
index e367b839..00000000
--- a/internal/docker-stacks-webhook/manifest.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-# Copyright (c) Jupyter Development Team.
-# Distributed under the terms of the Modified BSD License.
----
-applications:
-- name: docker-stacks-webhook
-  memory: 128M
-  instances: 1
-  path: .
-  buildpack: https://github.com/ihuston/python-conda-buildpack
-  command: >
-    jupyter-kernelgateway --KernelGatewayApp.port=$PORT
-    --KernelGatewayApp.ip=0.0.0.0
-    --KernelGatewayApp.api=notebook-http
-    --KernelGatewayApp.seed_uri='./docker-stacks-webhook.ipynb'
diff --git a/internal/docker-stacks-webhook/requirements.txt b/internal/docker-stacks-webhook/requirements.txt
deleted file mode 100644
index 54e83473..00000000
--- a/internal/docker-stacks-webhook/requirements.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-# Copyright (c) Jupyter Development Team.
-# Distributed under the terms of the Modified BSD License.
-git+https://github.com/parente/kernel_gateway@concatenate-cells
diff --git a/internal/docker-stacks-webhook/runtime.txt b/internal/docker-stacks-webhook/runtime.txt
deleted file mode 100644
index b4e9974f..00000000
--- a/internal/docker-stacks-webhook/runtime.txt
+++ /dev/null
@@ -1 +0,0 @@
-python-3.19.0
diff --git a/internal/inherit-diagram.png b/internal/inherit-diagram.png
deleted file mode 100644
index f82322b2..00000000
Binary files a/internal/inherit-diagram.png and /dev/null differ
diff --git a/internal/inherit-diagram.svg b/internal/inherit-diagram.svg
deleted file mode 100644
index f8cc942e..00000000
--- a/internal/inherit-diagram.svg
+++ /dev/null
@@ -1,60 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
-<svg viewBox="0 0 640 520" xmlns="http://www.w3.org/2000/svg" xmlns:inkspace="http://www.inkscape.org/namespaces/inkscape" xmlns:xlink="http://www.w3.org/1999/xlink">
-  <defs id="defs_block">
-    <filter height="1.504" id="filter_blur" inkspace:collect="always" width="1.1575" x="-0.07875" y="-0.252">
-      <feGaussianBlur id="feGaussianBlur3780" inkspace:collect="always" stdDeviation="4.2" />
-    </filter>
-  </defs>
-  <title>blockdiag</title>
-  <desc />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="67" y="46" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="67" y="126" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="67" y="206" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="67" y="286" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="259" y="286" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="67" y="366" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="259" y="366" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="451" y="366" />
-  <rect fill="rgb(0,0,0)" height="40" stroke="rgb(0,0,0)" style="filter:url(#filter_blur);opacity:0.7;fill-opacity:1" width="128" x="451" y="446" />
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="64" y="40" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="44" x="128" y="64">ubuntu@SHA</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="64" y="120" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="58" x="128" y="144">base-notebook</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="64" y="200" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="71" x="128" y="224">minimal-notebook</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="64" y="280" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="62" x="128" y="304">scipy-notebook</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="256" y="280" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="44" x="320" y="304">r-notebook</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="64" y="360" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="84" x="128" y="384">tensorflow-notebook</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="256" y="360" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="88" x="320" y="384">datascience-notebook</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="448" y="360" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="71" x="512" y="384">pyspark-notebook</text>
-  <rect fill="rgb(255,255,255)" height="40" stroke="rgb(0,0,0)" width="128" x="448" y="440" />
-  <text fill="rgb(0,0,0)" font-family="sans-serif" font-size="8" font-style="normal" font-weight="normal" text-anchor="middle" textLength="80" x="512" y="464">all-spark-notebook</text>
-  <path d="M 128 80 L 128 112" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="128,119 124,112 132,112 128,119" stroke="rgb(0,0,0)" />
-  <path d="M 128 160 L 128 192" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="128,199 124,192 132,192 128,199" stroke="rgb(0,0,0)" />
-  <path d="M 128 240 L 128 260" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 128 260 L 320 260" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 320 260 L 320 272" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="320,279 316,272 324,272 320,279" stroke="rgb(0,0,0)" />
-  <path d="M 128 240 L 128 272" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="128,279 124,272 132,272 128,279" stroke="rgb(0,0,0)" />
-  <path d="M 128 320 L 128 352" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="128,359 124,352 132,352 128,359" stroke="rgb(0,0,0)" />
-  <path d="M 128 320 L 128 340" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 128 340 L 320 340" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 320 340 L 320 352" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="320,359 316,352 324,352 320,359" stroke="rgb(0,0,0)" />
-  <path d="M 128 320 L 128 340" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 128 340 L 512 340" fill="none" stroke="rgb(0,0,0)" />
-  <path d="M 512 340 L 512 352" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="512,359 508,352 516,352 512,359" stroke="rgb(0,0,0)" />
-  <path d="M 512 400 L 512 432" fill="none" stroke="rgb(0,0,0)" />
-  <polygon fill="rgb(0,0,0)" points="512,439 508,432 516,432 512,439" stroke="rgb(0,0,0)" />
-</svg>