add action to deploy lectures on caddy

.gitea/workflows/deploy-lectures.yml

@@ -0,0 +1,35 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# Sample workflow for building and deploying a Jekyll site
+name: Deploy Lecture site
+run-name: ${{ gitea.actor }} deploys Lecture site
+on:
+  push:
+    branches:
+    - master
+
+jobs:
+  # Deploy job
+  build:
+    runs-on: ubuntu-latest # this is the "label" the runner will use and map to docker target OS
+    container: 
+      volumes: 
+        # left: where the output will end up on disk, right: volume name inside container
+        - /opt/caddy2/www/lectures:/tmp/lectures_staging
+
+    steps:
+      - name: --- CHECKOUT ---
+        uses: actions/checkout@v3
+        with: 
+          path: ./tmp
+      - name: --- NOTIFY ---
+        run: |
+          curl \
+            -H "Title: Gitea act_runner" \
+            -H "Content-Type: text/plain" \
+            -d $'Repo: ${{ github.repository }}\nRef: ${{ github.ref }}\nStatus: ${{ job.status}}' \
+            ntfy.sh/schallbert-borgmatic-catzenklebermusoelkanne
+