Add CI and release GitHub workflows

.github/workflows/ci.yml

@@ -0,0 +1,17 @@
+name: CI
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 6 * * 1'
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 8
+          cache: maven
+      - run: mvn verify

.github/workflows/release.yml

@@ -0,0 +1,43 @@
+name: Release
+on:
+  workflow_dispatch:
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 8
+          cache: maven
+      - name: Get version from pom.xml
+        run: |
+          VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
+          echo "VERSION=v$VERSION" >> $GITHUB_ENV
+      - name: Check tag does not exist
+        run: |
+          git fetch --tags
+          if git rev-parse "$VERSION" >/dev/null 2>&1; then
+            echo "Tag $VERSION already exists"; exit 1;
+          fi
+      - name: Check release does not exist
+        run: |
+          if gh release view "$VERSION" >/dev/null 2>&1; then
+            echo "Release $VERSION already exists"; exit 1;
+          fi
+        env:
+          GH_TOKEN: ${{ github.token }}
+      - run: mvn package
+      - name: Create tag and release
+        run: |
+          git tag "$VERSION"
+          git push origin "$VERSION"
+          gh release create "$VERSION" \
+            --title "$VERSION" \
+            --generate-notes \
+            ./target/NIOFileServer-*.jar
+        env:
+          GH_TOKEN: ${{ github.token }}