support packaging release with krankerl

.nextcloudignore

+/build
+/.editorconfig
+/.eslintrc.js
+/.git
+/.gitignore
+/.gitlab-ci.yml
+/.l10nignore
+/node_modules
+/.npmignore
+/babel.config.js
+/composer.json
+/krankerl.toml
+/Makefile
+/package-lock.json
+/package.json
+/postcss.config.js
+/screenshot.png
+/src
+/stylelint.config.js
+/.tx
+/utils
+/webpack.js

CHANGELOG.md

@@ -2,6 +2,8 @@
 ### Fixed
 - Add AGPL headers
   [#206](https://git.project-insanity.org/onny/nextcloud-app-radio/issues/206) @onny
+- Support older browser CSS with autoprefix
+  [#208](https://git.project-insanity.org/onny/nextcloud-app-radio/issues/208) @onny
 
 ## 1.0.0 - 2020-11
 ### Added

README.md

@@ -50,7 +50,7 @@ docker run -v /tmp/dockerdata:/data/data -v /tmp/nextcloud-app-radio:/opt/nextcl
 ```
 
 ## Development notes
-
+### General
 While editing the code, you could run following helper script to automatically
 compile the project:
 ```
@@ -58,9 +58,7 @@ echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo s
 make watch-js
 ```
 
-Contribute translations via
-[Transifex](https://www.transifex.com/project-insanityorg/radio-2/dashboard/)!
-
+### Translations
 Manually generate translations. The following commands will require the
 dependency packages ``gettext`` and ``php``.
 ```
@@ -70,6 +68,12 @@ php ../docker-ci/translations/translationtool/translationtool.phar create-pot-fi
 php ../docker-ci/translations/translationtool/translationtool.phar convert-po-files
 ```
 
+Contribute translations via
+[Transifex](https://www.transifex.com/project-insanityorg/radio-2/dashboard/)!
+
+### Prepare a release
+Consoult [Readme.md] on how to prepare a release for Gitlab and the app store.
+
 ## Reporting bugs
 
 You can report bugs in the public gitlab repository [here](https://git.project-insanity.org/onny/nextcloud-app-radio/issues) and for discussion you can find a section for the app in the offical Nextcloud forums [here](https://help.nextcloud.com/c/apps/radio).

Release.md

+Releasing a new version works quite easy with [krankerl](https://github.com/ChristophWurst/krankerl) and [github-release](https://github.com/aktau/github-release) installed:
+
+1. Run krankerl to build the package
+
+```
+krankerl package
+```
+
+2. Tag the release on GitHub
+
+```
+# For a prerelease
+github-release release -u nextcloud -r deck -t v0.3.1 -p
+
+# For a regular release
+github-release release -u nextcloud -r deck -t v0.3.1
+```
+
+3. Upload the release package to GitHub
+
+```
+github-release upload -u nextcloud -r deck -t v0.3.1 -n deck.tar.gz -f build/artifacts/deck.tar.gz
+```
+
+4. Run krankerl to release the package to the app store (add `--nightly` for prerelease packages)
+
+```
+krankerl publish https://github.com/nextcloud/deck/releases/download/v0.3.1/deck.tar.gz  
+```
+
+## Release PR template
+
+```
+## Backports
+
+- [ ] ...
+
+## Translations
+
+- [ ] ...
+
+## Release
+
+- [ ] Set proper Nextcloud versions in info.xml
+- [ ] Update changelog
+- [ ] Build test release
+- [ ] Tested on
+  - [ ] Nextcloud 13
+  - [ ] Nextcloud 14
+  - [ ] Nextcloud 15
+- [ ] Merge
+- [ ] Build final release
+- [ ] Publish release
+- [ ] Upload to the app store
+```

krankerl.toml

 [package]
 before_cmds = [
-	"composer install --no-dev -o",
-	"npm install --deps",
-	"npm run build",
+    'make all'
 ]