Added CIs.

.circleci/config.yml

@@ -0,0 +1,53 @@
+version: 2
+defaults: &defaults
+  working_directory: ~/repo
+  environment:
+    JVM_OPTS: -Xmx3200m
+    TERM: dumb
+    CI: true
+
+defaults_gradle: &defaults_gradle
+  steps:
+    - checkout
+    - restore_cache:
+        keys:
+          - gradle-dependencies-{{ checksum "build.gradle.kts" }}
+          # fallback to using the latest cache if no exact match is found
+          - gradle-dependencies-
+    - run:
+        name: Gradle Dependencies
+        command: ./gradlew dependencies
+    - save_cache:
+        paths: ~/.m2
+        key: gradle-dependencies-{{ checksum "build.gradle.kts" }}
+    - run:
+        name: Run All Checks
+        command: ./gradlew check
+    - store_artifacts:
+        path: build/reports/
+        destination: reports
+    - store_test_results:
+        path: build/reports/
+jobs:
+  build_gradle_jdk16:
+    <<: *defaults
+
+    docker:
+      - image: cimg/openjdk:16.0.0
+
+    <<: *defaults_gradle
+
+  build_gradle_jdk11:
+    <<: *defaults
+
+    docker:
+      - image: cimg/openjdk:11.0.10
+
+    <<: *defaults_gradle
+
+workflows:
+  version: 2
+  gradle:
+    jobs:
+      - build_gradle_jdk11
+      - build_gradle_jdk16