Initial commit

.github/workflows/binder.yaml

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+# Reference https://mybinder.readthedocs.io/en/latest/howto/gh-actions-badges.html
+name: Test this PR on Binder Badge
+on:
+  pull_request_target:
+    types: [opened]
+
+permissions:
+  pull-requests:
+    write
+
+jobs:
+  binder:
+    runs-on: ubuntu-latest
+    steps:
+    - name: comment on PR with Binder link
+      uses: actions/github-script@v3
+      with:
+        github-token: ${{secrets.GITHUB_TOKEN}}
+        script: |
+          var PR_HEAD_USERREPO = process.env.PR_HEAD_USERREPO;
+          var PR_HEAD_REF = process.env.PR_HEAD_REF;
+          github.issues.createComment({
+            issue_number: context.issue.number,
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            body: `[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/${PR_HEAD_USERREPO}/${PR_HEAD_REF}) :point_left: Test this PR on Binder`
+          })
+      env:
+        PR_HEAD_REF: ${{ github.event.pull_request.head.ref }}
+        PR_HEAD_USERREPO: ${{ github.event.pull_request.head.repo.full_name }}

.github/workflows/build.yaml

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+name: Build and push container image
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+
+    # For biggish images, github actions runs out of disk space.
+    # So we cleanup some unwanted things in the disk image, and reclaim that space for our docker use
+    # https://github.com/actions/virtual-environments/issues/2606#issuecomment-772683150
+    # and https://github.com/easimon/maximize-build-space/blob/b4d02c14493a9653fe7af06cc89ca5298071c66e/action.yml#L104
+    # This gives us a total of about 52G of free space, which should be enough for now
+    - name: cleanup disk space
+      run: |
+        sudo rm -rf /usr/local/lib/android /usr/share/dotnet /opt/ghc
+        df -h
+
+    - name: Checkout files in repo
+      uses: actions/checkout@main
+
+    - name: Build the image and push to quay.io if not a pull request
+      uses: jupyterhub/repo2docker-action@master
+      with:
+        # Don't push the image during a PR build
+        NO_PUSH: "${{ github.event_name == 'pull_request' }}"
+        # Make sure username & password/token pair matches your registry credentials
+        DOCKER_USERNAME: ${{ secrets.QUAY_USERNAME }}
+        DOCKER_PASSWORD: ${{ secrets.QUAY_PASSWORD }}
+        DOCKER_REGISTRY: "quay.io"
+        # Disable pushing a 'latest' tag, as this often just causes confusion
+        LATEST_TAG_OFF: true
+        # Put repo contents in /srv/repo, rather than the default (/home/jovyan). The home directory
+        # is mounted over by persistent storage when we are using the built image in a JupyterHub, and
+        # so all contents put in /home/jovyan are lost. This particularly prevents any 'start' script from
+        # working, as it is needed in runtime.
+        REPO_DIR: /srv/repo
+        #
+        # Uncomment and modify the following line with your image name, otherwise no push will happen
+        # IMAGE_NAME: "<quay-username>/<repository-name>"
+
+    # Lets us monitor disks getting full as images get bigger over time
+    - name: Show how much disk space is left
+      run: df -h

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2021, 2i2c-org
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# hub-user-image-template :paperclip:
+
+This is a template repository for creating dedicated user images for 2i2c hubs.
+
+## Overall workflow :gear:
+
+The overall workflow is to:
+
+1. Fork this repository to create your image repository
+
+2. Hook your image repository to quay.io
+
+3. Customize the image by editing repo2docker files in your image repository.
+
+   Changes can either be done by direct commits to main on your image repository, or through a pull request from a fork of your image repository. Direct commits will build the image and push it to Quay.io. PRs will build the image and offer a link to test it using Binder. Merging the PR will cause a commit on main and therefore trigger a build and push to Quay.io.
+
+4. Configure your Hub to use this new image
+
+### In-depth guide
+
+Checkout the 2i2c docs for an in-depth guide on how to use this template repository to create a custom user image and use it for your hub :arrow_right: https://docs.2i2c.org/en/latest/admin/howto/environment/hub-user-image-template-guide.html.
+
+## About this template repository :information_source:
+
+This template repository enables [jupyterhub/repo2docker-action](https://github.com/jupyterhub/repo2docker-action).
+This GitHub action builds a Docker image using the contents of this repo and pushes it to the [Quay.io](https://quay.io/) registry.
+
+### The environment
+
+It provides an example of a `environment.yml` conda configuration file for repo2docker to use.
+This file can be used to list all the conda packages that need to be installed by `repo2docker` in your environment.
+The `repo2docker-action` will update the [base repo2docker](https://github.com/jupyterhub/repo2docker/blob/HEAD/repo2docker/buildpacks/conda/environment.yml) conda environment with the packages listed in this `environment.yml` file.
+
+**Note:**
+A complete list of possible configuration files that can be added to the repository and be used by repo2docker to build the Docker image, can be found in the [repo2docker docs](https://repo2docker.readthedocs.io/en/latest/config_files.html#configuration-files).
+
+### The GitHub Action workflows
+
+This template repository provides some GitHub Action workflows that can build and push the image to quay.io when configured, and test the image on Binder.
+
+![Workflows](images/workflows.png)
+
+#### 1. Build and push container image :arrow_right: [build.yaml](https://github.com/2i2c-org/hub-user-image-template/blob/main/.github/workflows/build.yaml)
+
+This workflow is triggered by every pushed commit on the main branch of the repo (including when a PR is merged), and every commit made to a Pull Request opened against the default branch (`main`)..
+It **builds** the image and **pushes** it to the registry _on pushes to the default branch_.
+During PR builds, the image is **only** built and **not** pushed, unless explicitly configured to do so.
+Checkout [this section](https://docs.2i2c.org/en/latest/admin/howto/environment/hub-user-image-template-guide.html#enable-quay-io-image-push-during-pull-requests) on how to enable image pushes on Pull Requests.
+
+#### 2. Test this PR on Binder Badge :arrow_right: [binder.yaml](https://github.com/2i2c-org/hub-user-image-template/blob/MAIN/.github/workflows/binder.yaml)
+
+This workflow posts a comment inside a pull request, every time a pull request gets opened. The comment contains a "Test this PR on Binder" badge, which can be used to access the image defined by the PR in [mybinder.org](https://mybinder.org/).
+
+![Test this PR on Binder](images/binder-badge.png)

environment.yml

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+# This is the standard conda configuration file. Use this file to list
+# the conda packages that you need installed in your environment.
+channels:
+  - conda-forge
+
+dependencies:
+  - jupyter_contrib_nbextensions==0.5.1
+  # Required until https://github.com/jupyterhub/repo2docker/pull/1196 is merged
+  - jupyterhub-singleuser>=3.0,<4.0
+  # Set default python version to 3.10 - repo2docker sets it to 3.7 instead by default,
+  # which can limit us to older package versions
+  - python=3.10
+  # Everyone wants to use nbgitpuller for everything, so let's do that
+  - nbgitpuller=1.1.*
+  # Add other packages here
+  # -