Add docker

Dockerfile

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+FROM gradle:8.7-jdk17 AS builder
+WORKDIR /app
+
+COPY gradlew settings.gradle.kts build.gradle.kts gradle.properties ./ 
+COPY gradle ./gradle
+RUN chmod +x gradlew
+
+COPY src ./src
+
+RUN ./gradlew --no-daemon clean buildFatJar
+
+FROM eclipse-temurin:17-jre-jammy
+WORKDIR /app
+
+COPY --from=builder /app/build/libs/*-all.jar /app/app.jar
+
+EXPOSE 8080
+ENV JVM_OPTS=""
+
+CMD ["sh", "-c", "java $JVM_OPTS -jar /app/app.jar"]