[+] Docker

Dockerfile

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+# Use a multi-stage build to keep the image size small
+# Start with a Gradle image for building the project
+FROM gradle:jdk11 as builder
+
+# Copy the Gradle wrapper and configuration files separately to leverage Docker cache
+COPY --chown=gradle:gradle gradlew /home/gradle/
+COPY --chown=gradle:gradle gradle /home/gradle/gradle
+COPY --chown=gradle:gradle build.gradle.kts settings.gradle.kts /home/gradle/
+
+# Set working directory
+WORKDIR /home/gradle
+
+# Download dependencies - cached if build.gradle.kts and settings.gradle.kts are unchanged
+RUN ./gradlew dependencies
+
+# Copy the project source, this layer is rebuilt whenever a file has changed
+COPY --chown=gradle:gradle src /home/gradle/src
+
+# Build the application
+RUN ./gradlew build -x test
+
+# Start with a fresh image for the runtime
+FROM openjdk:11-jre-slim
+
+# Set the deployment directory
+WORKDIR /app
+
+# Copy only the built JAR from the builder image
+COPY --from=builder /home/gradle/build/libs/aqua-?.?.??.jar /app/
+
+# The command to run the application
+CMD java -jar aqua-*.jar

deploy.sh

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+#!/usr/bin/env bash
+
+# This is a deploy script for this java program
+
+# 1. Build the jar
+rm -rf build/libs
+JAVA_HOME="/usr/lib/jvm/java-17-openjdk" ./gradlew build
+
+# 2. Copy the jar to the server
+jar_name=$(ls -v build/libs/aqua-*.jar | grep -v "plain" | head -n 1)
+scp "$jar_name" lux:/root/aqua/aqua.jar
+
+# 3. Restart the service
+ssh lux "systemctl restart aqua"

docker-compose.yml

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+version: '3.8'
+
+services:
+  app:
+    build: .
+    ports:
+      - "8080:8080" # Replace with your application's port
+    environment:
+      - DB_HOST=db
+      - DB_PORT=3306
+      - DB_USER=root
+      - DB_PASSWORD=mysecret
+    depends_on:
+      - db
+
+  db:
+    image: mariadb:latest
+    environment:
+      MYSQL_ROOT_PASSWORD: mysecret
+      MYSQL_DATABASE: myappdb
+      MYSQL_USER: myappuser
+      MYSQL_PASSWORD: myapppassword
+    ports:
+      - "3306:3306"
+    volumes:
+      - ./db:/var/lib/mysql