Add Dockerfile and publishing to DockerHub

.github/workflows/create_release.yml

@@ -14,10 +14,10 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
-          java-version: '19'
-          distribution: 'temurin'
+          java-version: "19"
+          distribution: "temurin"
           architecture: x64
-          cache: 'gradle'
+          cache: "gradle"
       - name: Validate Gradle wrapper
         uses: gradle/wrapper-validation-action@v1
       - name: Grant permissions to gradlew
@@ -30,4 +30,22 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run:
-          gh release create -d ${{ github.ref_name }} ./game/build/distributions/void-${{ env.build_version }}.zip
+          gh release create -d ${{ github.ref_name }} ./game/build/distributions/void-${{ env.build_version }}.zip
+      - name: Log in to Docker Hub
+        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: greghib/void
+      - name: Build and push Docker image
+        uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,17 @@
+FROM eclipse-temurin:19-jdk-alpine
+LABEL authors="Greg"
+EXPOSE 43594/tcp
+
+RUN mkdir /app
+WORKDIR /app/
+
+# Copy JAR file
+COPY ./game/build/libs/void-server-*.jar /app/void-server.jar
+
+# Copy configuration and cache files
+COPY ./data/map/ /app/data/map/
+COPY ./data/spawns/ /app/data/spawns/
+COPY ./data/definitions/ /app/data/definitions/
+COPY ./data/cache/ /app/data/cache/
+
+CMD ["java", "-jar", "void-server.jar"]

docker-compose.yml

@@ -0,0 +1,8 @@
+version: "3.8"
+services:
+  void:
+    image: greghib/void
+    volumes:
+      - ./data/saves/:/app/data/saves
+    ports:
+      - "43594:43594"