release workflow

Author: hauner

.github/workflows/release.yaml

@@ -0,0 +1,32 @@
+name: release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+
+  publish:
+    name: publish release
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v1
+
+      - name: cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: publish release to bintray
+        env:
+          BINTRAY_USER: ${{ secrets.BINTRAY_USER }}
+          BINTRAY_KEY: ${{ secrets.BINTRAY_KEY }}
+        run: ./gradlew -PRELEASE publish

build.gradle.kts

@@ -144,3 +144,11 @@ if (project.hasProperty("SNAPSHOT")) {
         }
     }
 }
+
+if (project.hasProperty("RELEASE")) {
+    tasks.publish {
+        onlyIf {
+            ! version.toString().endsWith("SNAPSHOT")
+        }
+    }
+}