Add build instructions and auto deployment using GitHub actions

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+name: Deploy
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  Deploy:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+      - run: mkdir -p ~/.ssh && echo "${{ secrets.DEPLOY_KEY }}" > ~/.ssh/id_rsa && chmod 400 ~/.ssh/id_rsa
+      - run: git config --global user.name "GitHub Actions" && git config --global user.email "actions@github.com"
+      - run: make
+      - run: git config --global url."https://${{ github.actor }}:${{ secrets.GITHUB_TOKEN }}@github.com/".insteadOf "https://github.com/"
+      - run: make deploy
+        if: ${{ github.ref == 'refs/heads/main' }}

.gitignore

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+/build/
+/source/

Makefile

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+build:
+	mkdir -p build/src/
+	test -d source/ && git -C source/ pull || git clone git@github.com:clue-access/framework-x.git source/
+	docker run --rm -i -v ${PWD}/source:/docs -u $(shell id -u) squidfunk/mkdocs-material build
+	cp -r source/build/docs/ build/
+	cp index.html build/
+	cp src/* build/src/
+
+serve: build
+	php -S localhost:8080 -t build/
+
+deploy:
+	git -C build/ init
+	git -C build/ checkout live 2>/dev/null || git -C build/ checkout -b live
+	git -C build/ add --all
+	git -C build/ diff-index HEAD >/dev/null 2>/dev/null || git -C build/ commit -m "Website build"
+	git -C build/ remote get-url origin >/dev/null 2>/dev/null || git -C build/ remote add origin $(shell git remote get-url origin)
+	git -C build/ push origin live -f
+
+clean:
+	rm -rf source/ build/
+
+.PHONY: build serve deploy clean

README.md

@@ -1 +1,56 @@
 # Framework X website
+
+[![CI status](https://github.com/clue/framework-xwebsite/workflows/Deploy/badge.svg)](https://github.com/clue/framework-x-website/actions)
+
+Source code for the Framework X website.
+
+## Build
+
+You can build the website like this:
+
+```bash
+$ make
+```
+
+> Note that this command will clone Framework X which is currently in early access.
+  See https://github.com/clue/framework-x for more details.
+
+Once built, you can manually browse the `build/` directory or run the development
+web server like this:
+
+```bash
+$ make serve
+```
+
+Once built, you can clean up like this:
+
+```bash
+$ make clean
+```
+
+## Deploy
+
+Once built (see previous "Build" section), you can simply deploy the `build/`
+directory behind a web server of choice.
+
+The live website is deployed by pushing the contents of the `build/` directory to
+the `live` branch like this:
+
+```bash
+$ make deploy
+```
+
+## Auto-Deployment
+
+The website can be automatically deployed via the GitHub Pages feature.
+
+Any time a commit is merged (such as when a PR is merged), GitHub actions will
+automatically build and deploy the website. This is done by running the above
+deployment script (see previous chapter).
+
+> Repository setup:
+> Note that this command will clone Framework X which is currently in early access.
+> We're using a read-only SSH deploy key for reading from this source repository.
+> Make sure the required `DEPLOY_KEY` secret is set in the repository settings on GitHub.
+> See [action documentation](https://github.com/JamesIves/github-pages-deploy-action#using-an-ssh-deploy-key-)
+> for more details.