github-actions: create releases instead of uploading artifacts

.github/workflows/release.yml

@@ -0,0 +1,26 @@
+name: Releases
+
+on:
+  push:
+    tags:
+    - '*'
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+    - name: build
+      run: ./build.sh --verbose
+    - name: create tarball
+      # GitHub removes file permissions, but we need them to be there
+      # https://github.com/actions/upload-artifact/blob/cf8714cfeaba5687a442b9bcb85b29e23f468dfa/README.md#permission-loss
+      # Alternatively we could require the user to run a script that adds the permissions on first run, but that also feels broken...
+      run: tar -cvf tutorial.tar ./tutorial/
+    - uses: ncipollo/release-action@b7eabc95ff50cbeeedec83973935c8f306dfcd0b
+      with:
+        artifacts: "tutorial.tar"
+        artifactErrorsFailBuild: true

README.md

@@ -46,10 +46,11 @@ into the quests (many of which are impossible in a fresh clone)…
 
 Alternatively: If you don't want to run this "build"-script yourself (it
 basically just executes a bunch of git commands to create the folder "tutorial"
-and fills it with all the information you need), you can download it:
+and fills it with all the information you need), you can download it from the
+release page: https://github.com/miallo/nuggit/releases
 
 ```sh
-curl https://nuggit.lohmann.sh/tutorial.zip --output tutorial.zip
+cd ~/Downloads
 unzip tutorial.zip
 tar --extract --file=tutorial.tar
 cd tutorial