init

Dockerfile

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+# --- Stage 1: Build the JAR ---
+FROM gradle:9.2.1-jdk21 AS build
+
+# Set working dir
+WORKDIR /app
+
+# Copy Gradle files first (for caching)
+COPY --chown=gradle:gradle build.gradle.kts settings.gradle.kts gradle.properties gradlew ./
+COPY --chown=gradle:gradle gradle ./gradle
+
+# Copy source code
+COPY --chown=gradle:gradle src ./src
+
+# Build the fat jar
+RUN ./gradlew clean shadowJar --no-daemon
+
+# --- Stage 2: Run the app ---
+FROM eclipse-temurin:21-jdk-alpine
+
+WORKDIR /app
+
+# Copy the built JAR from the build stage
+COPY --from=build /app/build/libs/*.jar app.jar
+
+# Expose port (same as your server)
+EXPOSE 9000
+
+# Run the app
+ENTRYPOINT ["java", "-jar", "app.jar"]