🚀 CI: Add GitHub Actions CI/CD with Fedora containers

Replace the defunct Travis CI pipeline with GitHub Actions running in
Fedora minimal containers.

- CI runs lint (`ruff`) and tests (`pytest`) on every push and PR using
  `fedora-minimal:43` with the default Python 3.14 runtime
- Preview builds freeze the site into static HTML and upload it as a
  downloadable artifact for non-`main` branches (retained 7 days)
- Deploy workflow generates the static site via Frozen-Flask and
  publishes to GitHub Pages on push to `main`
- Add `freeze.py` to enumerate all freezable routes while excluding
  dynamic endpoints like `/blog/<username>` that parse live RSS feeds
- Use `actions/checkout@v6`, `ruff --fix` for environment-portable
  import sorting
- Add modern `README.md` with Fedora Linux 43 setup instructions,
  replacing the outdated `README.rst` (Python 2, `yum`, OpenShift 2
  references, etc.)

Assisted-by: Claude Opus 4.6 (1M context)
Signed-off-by: Justin Wheeler <git@jwheel.org>

Author: justwheel

.github/workflows/ci.yml

@@ -0,0 +1,54 @@
+name: CI
+
+on:
+  push:
+    branches: ["**"]
+  pull_request:
+    branches: ["**"]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: registry.fedoraproject.org/fedora-minimal:43
+
+    steps:
+      - name: Install system dependencies
+        run: microdnf install -y python3 python3-pip git-core
+
+      - uses: actions/checkout@v6
+
+      - name: Install project dependencies
+        run: pip install -e ".[test]"
+
+      - name: Lint with ruff
+        run: ruff check --fix . && ruff check .
+
+      - name: Run tests
+        run: pytest --tb=short
+
+  preview:
+    if: github.ref != 'refs/heads/main'
+    needs: test
+    runs-on: ubuntu-latest
+    container:
+      image: registry.fedoraproject.org/fedora-minimal:43
+
+    steps:
+      - name: Install system dependencies
+        run: microdnf install -y python3 python3-pip git-core
+
+      - uses: actions/checkout@v6
+
+      - name: Install project dependencies
+        run: pip install -e .
+
+      - name: Freeze static site
+        run: python3 freeze.py
+
+      - name: Upload preview artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: site-preview
+          path: build/
+          retention-days: 7

.github/workflows/deploy.yml

@@ -0,0 +1,48 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: registry.fedoraproject.org/fedora-minimal:43
+
+    steps:
+      - name: Install system dependencies
+        run: microdnf install -y python3 python3-pip git-core
+
+      - uses: actions/checkout@v6
+
+      - name: Install project dependencies
+        run: pip install -e .
+
+      - name: Freeze static site
+        run: python3 freeze.py
+
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: build/
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.travis.yml

@@ -0,0 +1,105 @@
+# HFLOSSK
+
+![GitHub Actions CI status](https://github.com/FOSSRIT/hflossk/actions/workflows/ci.yml/badge.svg)
+
+## What is this?
+
+This repository uses Flask, Mako, and Bootstrap to make a website for the Humanitarian Free/Open Source Software Course at RIT.
+The content shown here is a compilation of course materials from several different professors, who ran the course multiple semesters.
+Those professors were as follows:
+
+- D. Joe
+- Dave Shein
+- Justin Sherrill
+- Ralph Bean
+- Remy DeCausemaker
+- Stephen Jacobs
+
+
+## Setting up your development environment
+
+### Fedora Linux 43
+
+Install Python and create a virtual environment:
+
+```bash
+sudo dnf install python3 python3-pip git
+```
+
+Clone the repository and set up the project:
+
+```bash
+git clone git@github.com:FOSSRIT/hflossk.git
+cd hflossk
+python3 -m venv venv
+source venv/bin/activate
+pip install -e .
+```
+
+### Running locally
+
+With your virtual environment activated:
+
+```bash
+python app.py
+```
+
+Open [127.0.0.1:5000/](http://127.0.0.1:5000/) in your browser.
+The server runs in debug mode and will reload when you change files.
+
+### Running the tests
+
+Install the test dependencies and run with `pytest`:
+
+```bash
+pip install -e ".[test]"
+pytest
+```
+
+Or use `tox` to run the full test suite and linter:
+
+```bash
+pip install tox
+tox
+```
+
+Tests check validity of all YAML files and validate the keys in student YAML files.
+The linter (`ruff`) checks code style.
+
+
+## Building a static site
+
+The site can be frozen into static HTML using Frozen-Flask:
+
+```bash
+python freeze.py
+```
+
+This generates the site in the `build/` directory.
+This is what gets deployed to GitHub Pages on pushes to `main`.
+
+
+## Course content
+
+The course materials (syllabus, homework assignments, lecture notes) are kept in this repository.
+
+Files ending with `.mak` are written in the [Mako Templating](https://www.makotemplates.org/) language.
+Mako files can contain plain HTML or mix Python with HTML.
+
+You should run the server locally to check that your modifications render the way you want before pushing.
+
+
+## License
+
+© 2013 Remy DeCausemaker
+
+Licensed under the Apache License, Version 2.0 (the "License").
+You may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+> [www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)
+>
+> Unless required by applicable law or agreed to in writing, software distributed
+> under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+> CONDITIONS OF ANY KIND, either express or implied. See the License for the
+> specific language governing permissions and limitations under the License.