Add first article

.gitea/workflows/deploy.yaml

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+# Build the website with Hugo and publish it to brain.tdehaeze.xyz
+#
+# Runs on the homelab act_runner (see homelab.org).
+# The generated site is written to /docker/brain/public on the host,
+# which is served by the `brain` Caddy container.
+# The old site is only replaced once the build succeeded.
+name: Deploy
+
+on:
+  push:
+    branches: [master]
+  workflow_dispatch:
+
+concurrency:
+  group: deploy
+  cancel-in-progress: true
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    container:
+      # Keep the same Hugo version as locally (`hugo version`)
+      image: ghcr.io/gohugoio/hugo:v0.166.0
+      volumes:
+        - /docker/brain:/deploy
+    steps:
+      - name: Build and publish
+        shell: sh
+        run: |
+          set -eu
+          git clone --depth 1 --branch "$GITHUB_REF_NAME" \
+              --recurse-submodules --shallow-submodules \
+              "$GITHUB_SERVER_URL/$GITHUB_REPOSITORY.git" /tmp/site
+          cd /tmp/site
+          rm -rf /deploy/.new /deploy/.old
+          hugo --gc --destination /deploy/.new
+          if [ -d /deploy/public ]; then mv /deploy/public /deploy/.old; fi
+          mv /deploy/.new /deploy/public
+          rm -rf /deploy/.old