ECS(aws)における断続的なシャットダウン(extshutdownhook)についての対処法

前提・実現したいこと

spring bootを使用
docker image化
awsのECSでfargateを使用し実行

起動後、数分経つと毎回以下のメッセージを出力しシャットダウンします。
その後、ECSが新しいタスクを実行するものの同様の減少でシャットダウンと軌道を繰り返す。

発生している問題・エラーメッセージ

2020-12-16 13:07:34.097  INFO 1 --- [extShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2020-12-16 13:07:34.107  INFO 1 --- [extShutdownHook] o.s.s.c.ThreadPoolTaskScheduler          : Shutting down ExecutorService 'taskScheduler'
2020-12-16 13:07:34.107  INFO 1 --- [extShutdownHook] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'
2020-12-16 13:07:34.108  INFO 1 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2020-12-16 13:07:34.121  INFO 1 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.

build.gradle

plugins {
	id 'org.springframework.boot' version '2.3.4.RELEASE'
	id 'io.spring.dependency-management' version '1.0.10.RELEASE'
	id 'java'
}

group = 'com.example'
version = '0.3.0-SNAPSHOT'
sourceCompatibility = '11'

configurations {
	compileOnly {
		extendsFrom annotationProcessor
	}
}

repositories {
	mavenCentral()
}

dependencies {
	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
	implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
	implementation 'org.springframework.boot:spring-boot-starter-web'
	implementation 'org.webjars:jquery:3.5.0'
	implementation 'org.webjars:bootstrap:4.4.1-1'
	implementation 'javax.validation:validation-api:2.0.1.Final'
	implementation 'org.springframework.boot:spring-boot-starter-security'
	implementation 'org.thymeleaf.extras:thymeleaf-extras-springsecurity5'
	implementation("org.springframework.boot:spring-boot-starter-mail")
	compile 'com.google.zxing:core:3.2.1'
	compile 'com.google.zxing:javase:3.2.1'
	compile 'commons-codec:commons-codec:1.10'
	compile 'org.apache.commons:commons-lang3:3.7'
	compileOnly 'org.projectlombok:lombok'
	developmentOnly 'org.springframework.boot:spring-boot-devtools'
	runtimeOnly 'mysql:mysql-connector-java'
	//runtimeOnly 'com.h2database:h2'
	annotationProcessor 'org.projectlombok:lombok'
	testImplementation 'org.awaitility:awaitility:4.0.3'
	testImplementation('org.springframework.boot:spring-boot-starter-test') {
		exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
	}
}

test {
	useJUnitPlatform()
}

tasks.withType(JavaCompile) {
	options.compilerArgs << '-Xlint:unchecked'
}