io.micronaut.runtime.Micronaut - No embedded container found - kotlin

Question

I'm trying to build a Kotlin application but, even with successfully build, I face with the error bellow. What I'm doing wrong?
▶ java -jar build/libs/app-0.1.jar
22:10:02.122 [main] INFO io.micronaut.runtime.Micronaut - No embedded container found. Running as CLI application
Here is my build status:
▶ ./gradlew assemble
BUILD SUCCESSFUL in 3s
14 actionable tasks: 1 executed, 13 up-to-date
That is the part of my gradle.build file:
apply from: "dependencies.gradle"
apply from: "protobuf.gradle"
version "0.1"
group "app"
mainClassName = "app.Application"
dependencies {
compile "ch.qos.logback:logback-classic:1.2.3"
}
jar {
manifest {
attributes "Main-Class": mainClassName
}
from {
configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }
}
}

Answer 1

I had a similar issue:
I was able to run code from IDE, but failed to run Docker container with the app
And had compile 'io.micronaut:micronaut-http-server-netty:1.1.0' in my build.gradle.
Also I was using shadowJar plugin and there was the issue. Adding:
shadowJar {
mergeServiceFiles()
}
solved the problem. It transforms entries in META-INF/services resources into a single resource. My shadowed jar file contained a lot of entries in this folder.

Answer 2

It is difficult to say for sure without seeing the project but one thing that could cause that issue would be not having a dependency on io.micronaut:micronaut-http-server-netty. A newly created app will have something like this in build.gradle...
dependencies {
compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:${kotlinVersion}"
compile "org.jetbrains.kotlin:kotlin-reflect:${kotlinVersion}"
compile "io.micronaut:micronaut-runtime"
compile "io.micronaut:micronaut-http-client"
// Make Sure You Have This...
compile "io.micronaut:micronaut-http-server-netty"
kapt "io.micronaut:micronaut-inject-java"
kapt "io.micronaut:micronaut-validation"
kaptTest "io.micronaut:micronaut-inject-java"
runtime "ch.qos.logback:logback-classic:1.2.3"
runtime "com.fasterxml.jackson.module:jackson-module-kotlin:2.9.4.1"
testCompile "org.junit.jupiter:junit-jupiter-api:5.1.0"
testCompile "org.jetbrains.spek:spek-api:1.1.5"
testRuntime "org.junit.jupiter:junit-jupiter-engine:5.1.0"
testRuntime "org.jetbrains.spek:spek-junit-platform-engine:1.1.5"
}