Enable GitHub Actions builds (#1)

* Enable GitHub Actions builds

* Control version from CI

* Automatic GitHub releases

* Set task names

* Fix tag pattern

* Change default version to 1.0

.github/workflows/build.yml

@@ -0,0 +1,42 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - '**'
+    tags-ignore:
+      - 'v*.*'
+  workflow_call:
+    inputs:
+      version:
+        type: string
+
+jobs:
+  build:
+    name: Gradle build
+    runs-on: ubuntu-latest
+    steps:
+      - id: version
+        name: Detect version
+        run: echo "version=${VERSION:-1.0+git-${GITHUB_SHA::7}}" >> $GITHUB_OUTPUT
+        env:
+          VERSION: ${{ inputs.version }}
+      - name: Checkout
+        uses: actions/checkout@v3
+      - uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+      - name: Build
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: |
+            build
+            -Pversion=${{ steps.version.outputs.version }}
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: gradle-build
+          path: build/libs/*-all.jar

.github/workflows/release.yml

@@ -0,0 +1,47 @@
+name: GitHub release
+
+on:
+  push:
+    tags:
+      - 'v*.*'
+
+permissions:
+  contents: write
+
+jobs:
+  version:
+    name: Extract version from git
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.version.outputs.version }}
+    steps:
+      - id: version
+        name: Extract version
+        run: |
+          TAG=${{ github.ref }}
+          VERSION=${TAG#refs/tags/v}
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+  build:
+    name: Build
+    needs: version
+    uses: ./.github/workflows/build.yml
+    with:
+      version: ${{ needs.version.outputs.version }}
+  release:
+    name: Prepare release
+    needs:
+      - version
+      - build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download build artifacts
+        uses: actions/download-artifact@v3
+        with:
+          name: gradle-build
+      - name: Create GitHub release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: ${{ needs.version.outputs.version }}
+          generate_release_notes: true
+          draft: true
+          files: '*'

build.gradle.kts

@@ -5,7 +5,6 @@ plugins {
 }
 
 group = "info.mmpa"
-version = "1.0-SNAPSHOT"
 
 repositories {
     mavenCentral()

gradle.properties

@@ -0,0 +1,3 @@
+# Default development version
+# See: ./.github/workflows/build.yml
+version=1.0-SNAPSHOT