Build & test minified distributable on GHA

Author: pimterry

.github/workflows/ci.yml

@@ -8,10 +8,18 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Set up JDK 1.14
+      - name: Set up JRE 8 as libs for R8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 8
+
+      - name: Set up JDK 14 for build
         uses: actions/setup-java@v1
         with:
           java-version: 14
 
       - name: Build & test the agent standalone
-        run: ./gradlew quickTest
+        run: ./gradlew quickTest
+
+      - name: Build & test the full distributable
+        run: ./gradlew distTest