Why subproject dependency jar includes all dependencies in it? - spring-boot

Question

My project consists of multiple modules like core, my-backend, university, learning, etc.
Core is module which is required in all rest modules.
When I create build of my-backend module, I see core is being added with all dependencies in it which is making that jar too big. Seems some issue with my gradle file which is causing this problem.
Also somehow application.yml from core module is not being loaded from my-backend module. Any Idea why?
My gradle file is as follows:
buildscript {
ext {
springBootVersion = '2.2.1.RELEASE'
internalUrl = 'http://internal/repository'
}
repositories {
mavenLocal()
maven { url "https://plugins.gradle.org/m2/" }
maven { url "http://repo.spring.io/release" }
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
classpath 'org.asciidoctor:asciidoctor-gradle-plugin:1.5.3'
classpath 'org.asciidoctor:asciidoctorj-pdf:1.5.0-alpha.15'
}
}
plugins {
id "io.freefair.lombok" version "3.8.4" apply false
id 'org.springframework.boot' version '2.2.1.RELEASE'
id 'io.spring.dependency-management' version '1.0.8.RELEASE'
}
subprojects {
apply plugin: 'java'
apply plugin: 'maven'
apply plugin: 'application'
apply from: "$rootDir/dependencies.gradle"
mainClassName = "com.myk.MyApp"
group = 'com'
version = app.version
description = """"""
sourceCompatibility = 11
targetCompatibility = 11
ext {
set('springCloudVersion', "Hoxton.RC1")
}
repositories {
mavenLocal()
maven { url "http://repo.spring.io/libs-snapshot" }
jcenter()
mavenCentral()
maven { url "http://repo.maven.apache.org/maven2" }
maven { url "http://maven.aksw.org/repository/internal" }
maven { url "https://dl.bintray.com/michaelklishin/maven/" }
}
configurations {
compileOnly {
extendsFrom annotationProcessor
}
}
// additional plugins
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
apply plugin: "io.freefair.lombok"
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-data-mongodb'
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-security'
implementation 'org.springframework.boot:spring-boot-starter-actuator'
implementation 'org.springframework.boot:spring-boot-starter-jdbc'
implementation 'org.springframework.boot:spring-boot-starter-mail'
implementation 'org.springframework.boot:spring-boot-starter-aop'
implementation 'org.springframework.boot:spring-boot-starter-integration'
implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
testImplementation 'org.springframework.security:spring-security-test'
testImplementation 'org.springframework.cloud:spring-cloud-stream-test-support'
testImplementation (group: 'com.github.javafaker', name: 'javafaker', version: ver.'javafaker') {
exclude group: 'org.yaml', module: 'snakeyaml'
}
}
test {
useJUnitPlatform()
}
dependencyManagement {
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
}
}
}
project(':core') {
dependencies {
implementation group: 'com.github.fommil.netlib', name: 'all', version: '1.1.2' // weka dependency
implementation 'org.springframework.boot:spring-boot-configuration-processor:2.2.1.RELEASE'
implementation group: 'com.google.firebase', name: 'firebase-admin', version: ver.'firebase-admin'
implementation group: 'com.google.apis', name: 'google-api-services-gmail', version: ver.'google-api-services-gmail'
compile "org.quartz-scheduler:quartz:${ver.quartz}"
}
}
[
':university',
':my-backend',
':learning'
].each {
project(it) {
apply plugin: 'org.springframework.boot'
apply plugin: 'war'
apply plugin: 'io.spring.dependency-management'
mainClassName = "com.myk.MyApp"
springBoot {
buildInfo()
}
dependencies {
compile project(':core')
providedRuntime 'org.springframework.boot:spring-boot-starter-tomcat'
testCompile group: 'io.github.swagger2markup', name: 'swagger2markup', version: ver.'swagger2markup'
}
}
}