Initial commit

.github/workflows/build.yml

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+# SPDX-FileCopyrightText: The openTCS Authors
+# SPDX-License-Identifier: MIT
+
+name: Gradle Build
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # (=v4.1.1)
+      - name: Set up JDK 21
+        uses: actions/setup-java@387ac29b308b003ca37ba93a6cab5eb57c8f5f93 # (=v4.0.0)
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@699bb18358f12c5b78b37bb0111d3a0e2276e0e2 # (=v2.1.1)
+      - name: Cache Gradle packages
+        uses: actions/cache@13aacd865c20de90d75de3b17ebe84f7a17d57d2 # (=v4.0.0)
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Check code formatting
+        run: ./gradlew spotlessCheck
+      - name: Cleanup Gradle Cache
+        # Remove some files from the Gradle cache, so they aren't cached by GitHub Actions.
+        # Restoring these files from a GitHub Actions cache might cause problems for future builds.
+        run: |
+          rm -f ~/.gradle/caches/modules-2/modules-2.lock
+          rm -f ~/.gradle/caches/modules-2/gc.properties