ci: added CircleCI config + auto-deploy with Docker 🐬 (#4)

* refactor: switched project to Maven

* chore: added LWJGL libs in Maven

* ci: updated build command with maven

* ci: fixed typo in maven apt install

* ci: removed maven apt install from build

* fix: expose UDP port in Dockerfile

Author: NaimanMpl

.circleci/config.yml

@@ -3,39 +3,39 @@ version: 2.1
 executors:
   docker-executor:
     docker:
-      - image: circleci/openjdk:17-jdk
+      - image: cimg/openjdk:21.0.2
 
 jobs:
   build:
     executor: docker-executor
     steps:
-      - build
+      - checkout
+      - run:
+            name: Install APT dependencies
+            command: |
+              sudo apt update
+              sudo apt install -y findutils
       - run:
           name: Build server application
           command: |
-            mkdir -p build/libs
-            javac -cp 'libs/*' -d build/classes $(find src -name '*.java')
-            jar --create --file build/libs/MinecraftServer.jar --manifest < (echo "Main-Class: fr.math.minecraft.ServerMain") -C build/classes .
-            jar --update --file build/libs/MinecraftServer.jar -C libs .
+            mvn clean package
 
   deploy:
     executor: docker-executor
     steps:
       - run:
           name: Install SSH Client
           command: |
-            apt-get update && apt-get install -y openssh-client
+            sudo apt-get update && sudo apt-get install -y openssh-client
+      - run:
+          name: Add VPS host to known hosts
+          command: |
+            mkdir -p ~/.ssh
+            ssh-keyscan -p $PORT -H $HOST >> ~/.ssh/known_hosts
       - run:
           name: Deploy application
           command: |
-            echo "Host $HOST" >> ~/.ssh/config
-            echo "  User $USERNAME" >> ~/.ssh/config
-            echo "  Port $PORT" >> ~/.ssh/config
-            echo "  PasswordAuthentication yes" >> ~/.ssh/config
-            echo "  PubkeyAuthentication no" >> ~/.ssh/config
-            
-            sshpass -p $PASSWORD scp build/libs/MinecraftServer.jar $USERNAME@$HOST:/opt/Minecraft_Clone/
-            sshpass -p $PASSWORD ssh $USERNAME@$HOST 'docker stop minecraft-clone-server || true && docker rm minecraft-clone-server || true && docker run -d -p 50000:50000 -v /opt/Minecraft_Clone:/app --name minecraft-clone-server openjdk:17-jdk-slim java -jar /app/MinecraftServer.jar'
+            ssh $USERNAME@$HOST -p $PORT 'cd /opt/Minecraft_Clone && sh /opt/Minecraft_Clone/deploy.sh'
 
 workflows:
   version: 2

.gitignore

@@ -29,6 +29,9 @@ bin/
 
 ### Mac OS ###
 .DS_Store
+
+## Game
+target/
 src/log/client-log.txt
 src/log/client-log.txt
 src/log/

Dockerfile

@@ -2,20 +2,17 @@ FROM openjdk:17-jdk-slim AS builder
 WORKDIR /build
 
 COPY src ./src
-COPY libs ./libs
-
-RUN javac -cp 'libs/linux/*' -d out $(find src -name '*.java')
-
-RUN jar --create --file MinecraftServer.jar --manifest /dev/null -C out .
-RUN echo "Main-Class: fr.math.minecraft.ServerMain" > MANIFEST.MF && jar --update --file MinecraftServer.jar --manifest MANIFEST.MF
-RUN jar --update --file MinecraftServer.jar -C libs .
+COPY pom.xml ./pom.xml
 
+RUN apt-get update && apt-get install -y maven
+RUN mvn clean package
 
 FROM openjdk:17-jdk-slim
 WORKDIR /app
 
-COPY --from=builder /build/MinecraftServer.jar .
+COPY log ./log
+COPY --from=builder /build/target/minecraft-clone-1.0-SNAPSHOT-jar-with-dependencies.jar .
 
-EXPOSE 50000
+EXPOSE 50000/udp
 
-CMD ["java", "-jar", "MinecraftServer.jar"]
+CMD ["java", "-jar", "minecraft-clone-1.0-SNAPSHOT-jar-with-dependencies.jar"]