Migrate CI/release builds to GitHub Actions

* Add CI build workflow using Github Actions
* Add release build workflow on tags of format "v*"
* Delete Travis configuration

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: CI build
+on: push
+jobs:
+  ci:
+    name: Build the rights application
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Checkout submodules
+        uses: textbook/git-checkout-submodule-action@master
+      - name: Cache ivy2 dependencies
+        uses: actions/cache@v2
+        env:
+          cache-name: cache-ivy2
+        with:
+          path: ~/.ivy2
+          key: ${{ runner.os }}-ivy2-${{ hashFiles('**/build.sbt') }}
+      - name: Cache sbt dependencies
+        uses: actions/cache@v2
+        env:
+          cache-name: cache-sbt
+        with:
+          path: ~/.sbt
+          key: ${{ runner.os }}-sbt-${{ hashFiles('**/build.properties') }}
+      - name: Set up Scala
+        uses: olafurpg/setup-scala@v10
+        with:
+          java-version: adopt@1.8.0
+      - name: Run tests
+        run: sbt test

.github/workflows/release.yml

@@ -0,0 +1,34 @@
+name: Create release
+on:
+  push:
+    tags:
+      - 'v*'
+jobs:
+  build:
+    name: Create release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Build rights application
+        run: sbt clean dist
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          draft: false
+          prerelease: false
+      - name: Upload Release Asset
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./target/universal/rights-app-dist.zip
+          asset_name: rights-app-dist.zip
+          asset_content_type: application/zip

README.md

@@ -22,6 +22,6 @@ and visit [http://localhost:9000](http://localhost:9000).
 
 To incorporate updates or new translations, install [`tx`](https://docs.transifex.com/client/introduction), run [`tx pull`](https://docs.transifex.com/client/pull#command-options)` && for f in conf/messages_*.properties; do native2ascii $f $f; done` and commit the changes. For convenience, you can also execute `./updateI18n.sh` instead. If a new translation has been added, enable it by editing the `languages.available` key in `conf/application.conf`.
 
-The new version needs to be tagged with git so that it gets recognized as a new release.
+The new version needs to be tagged with git so that it gets recognized as a new release, using a tag that starts with `v` (e.g. `v1.2.7`).
 
 See also notes on implementing translations for the [data model](https://github.com/rightsstatements/data-model/blob/master/README.md) and the [website](https://github.com/rightsstatements/rightsstatements.github.io/blob/master/README.md) for more information.