add ci files

.gitlab-ci.yml

+stages:
+  - build
+  - deploy
+  
+maven-build:
+  image: maven:3-jdk-8
+  stage: build
+  script: 
+    - cd complete
+    - mvn clean package -B -Dmaven.test.skip=true
+  artifacts:
+    paths:
+      - complete/target/*.jar
+
+production:
+  image: maven:3-jdk-8
+  stage: deploy
+  before_script:
+    - 'command -v ssh-agent >/dev/null || ( apt-get update -y && apt-get install openssh-client -y )'
+    - eval $(ssh-agent -s)
+    - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add -
+    - mkdir -p ~/.ssh
+    - chmod 700 ~/.ssh
+    - '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" >> ~/.ssh/config'  
+  script:
+    # 在 web 服务器上创建应用目录
+    - ssh root@$APP_HOST "[[ -d /usr/local/apps/hello-world ]] || { mkdir -p /usr/local/apps/hello-world; }"
+    # 将应用部署启动脚本到 web 服务器上
+    - cat .gitlab-ci/run.sh | ssh root@$APP_HOST "cat > /usr/local/apps/hello-world/run.sh; chmod +x /usr/local/apps/hello-world/run.sh"
+    # 复制 jar 文件到服务器
+    - scp complete/target/spring-boot-complete-0.0.1-SNAPSHOT.jar root@$APP_HOST:/usr/local/apps/hello-world/hello-world.jar
+    # 部署应用为系统服务
+    - cat .gitlab-ci/hello-world.service | ssh root@$APP_HOST "cat > ./hello-world.service "
+    - ssh root@$APP_HOST "[[ -f /etc/systemd/system/hello-world.service ]] || { mv ./hello-world.service /etc/systemd/system/hello-world.service && systemctl daemon-reload && systemctl enable hello-world.service; }"
+    - ssh root@$APP_HOST "[[ -f ./hello-world.service ]] || { rm ./hello-world.service; }"
+    # 重启应用服务
+    - ssh root@$APP_HOST "systemctl restart hello-world"
+    # 查看服务状态
+    - ssh root@$APP_HOST "systemctl status hello-world"
+  only:
+  - main

.gitlab-ci/deploy.sh

+#!/bin/bash
+ssh root@web1 "[[ -d /usr/local/apps/hello-world ]] || { mkdir -p /usr/local/apps/hello-world; }"
+cat .gitlab-ci/run.sh | ssh root@web1 "cat > /usr/local/apps/hello-world/run.sh; chmod +x /usr/local/apps/hello-world/run.sh"
+scp complete/target/spring-boot-complete-0.0.1.jar root@web1:/usr/local/apps/hello-world/hello-world.jar
+cat .gitlab-ci/hello-world.service | ssh root@web1 "cat > ./hello-world.service "
+ssh root@web1 "[[ -f /etc/systemd/system/hello-world.service ]] || { mv ./hello-world.service /etc/systemd/system/hello-world.service && systemctl daemon-reload && systemctl enable hello-world.service && systemctl restart hello-world.service; }"
+ssh root@web1 "[[ -f ./hello-world.service ]] && { rm ./hello-world.service; }"

.gitlab-ci/hello-world.service

+[Unit]
+Description=hello-world
+After=syslog.target
+
+[Service]
+User=root
+ExecStart=/usr/local/apps/hello-world/run.sh
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target
\ No newline at end of file

.gitlab-ci/run.sh

+#!/bin/bash
+cd /usr/local/apps/hello-world
+java -jar hello-world.jar
\ No newline at end of file