Add CI

Author: fr1kin

.github/workflows/continuous_integration.yml

@@ -0,0 +1,38 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Caches Gradle dependencies and wrappers
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.gradle/caches/modules-2
+            ~/.gradle/wrapper/dists
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts', '**/gradle.properties', '**/gradle/wrapper/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Run cibuild script
+        id: exec
+        run: ./scripts/cibuild
+
+      - name: Cleanup Gradle Cache
+        run: |
+          sudo rm -f ~/.gradle/caches/modules-2/modules-2.lock
+          sudo rm -f ~/.gradle/caches/modules-2/gc.properties
+
+# TODO:
+#      - name: Upload the built artifact
+#        uses: actions/upload-artifact@v2
+#        with:
+#          name: ${{ steps.exec.outputs.jar }}
+#          path: build/libs/${{ steps.exec.outputs.jar }}
+#          if-no-files-found: error

Dockerfile

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+FROM eclipse-temurin:17.0.2_8-jdk-focal
+
+# need to install git for paper plugin
+RUN apt update -y; \
+    apt install git -y; \
+    git config --global user.email "[email protected]"; \
+    git config --global user.name "Continuous Integration"

docker-compose.ci.yml

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+version: '2.4'
+
+services:
+  gradle:
+    build:
+      context: .
+      dockerfile: ./Dockerfile
+    container_name: jdk-slim-git
+    environment:
+      - CI=${CI:-}
+    volumes:
+      # gradle caches
+      - ~/.gradle/caches/modules-2:/root/.gradle/caches/modules-2:z
+      - ~/.gradle/wrapper/dists:/root/.gradle/wrapper/dists:z
+      # exclude these from workdir mount
+      - /opt/build/PaperX-API/
+      - /opt/build/PaperX-Server/
+      # only allow reads to the git repo
+      - .git/:/opt/build/.git/:ro
+      # paperweight cache contains files that save the absolute path,
+      # so we create a special volume to cache this directory
+      - paperweight_cache:/opt/build/.gradle/caches/paperweight/
+      # mount working directory
+      - ./:/opt/build:Z
+    working_dir: /opt/build
+    # these two gradle tasks must be run independently, otherwise it will fail
+    command: bash -c 'set -x
+               && ./gradlew --no-daemon applyPatches --stacktrace
+               && ./gradlew --no-daemon createReobfPaperclipJar --stacktrace'
+
+volumes:
+  paperweight_cache:

scripts/cibuild

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+#!/usr/bin/env bash
+
+set -e
+
+if [[ -n "${DEBUG_MODE}" ]]; then
+  set -x
+fi
+
+function usage() {
+  echo -n \
+    "Usage: $(basename "$0")
+Build application for staging or a release.
+"
+}
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+  if [[ "${1:-}" == "--help" ]]; then
+    usage
+  else
+    # if mounting the hosts cache folder, gradle inside the container will try and
+    # acquire a file lock that the host machine may already be holding. this will
+    # result in the container hanging indefinitely. stopping any existing daemons
+    # on the host is the simplest way to 'solve' this issue
+    if command -v java &>/dev/null; then
+      ./gradlew --stop
+    fi
+
+    chmod +x ./gradlew
+
+    CI="${CI:-}" docker-compose -f docker-compose.ci.yml \
+      run --rm gradle
+  fi
+fi