jib packages spring boot devtools

Environment:

• Jib version: 2.1.0
• Build tool: maven
• OS: macos

Description of the issue: I created a Spring Boot app w/ devtools dependency:

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-devtools</artifactId>
  <scope>runtime</scope>
  <optional>true</optional>
</dependency>

In the resulting image, devtool is actually activated. The dependency is in the image’s /app/libs directory.

Expected behavior: Optional dependency ignored? Spring Boot’s plugin excludes devtool by default. https://docs.spring.io/spring-boot/docs/2.2.5.RELEASE/maven-plugin/repackage-mojo.html

Steps to reproduce:

1. Create a new spring boot app w/ devtool
2. Package w/ Jib
3. See that Jib includes Devtool

jib-maven-plugin Configuration:

<plugin>
  <groupId>com.google.cloud.tools</groupId>
  <artifactId>jib-maven-plugin</artifactId>
  <version>2.1.0</version>
  <configuration>
    <from><image>openjdk:8u222-slim</image></from>
    <to><image>gcr.io/wise-coyote-827/jib-demo</image></to>
    <container><user>nobody:nogroup</user></container></configuration>
</plugin>

Log output:

Additional Information:

[chanseokoh]

We have published a Jib extension for Spring Boot (Maven and Gradle) that covers this issue. You can apply the extension on recent Jib versions.

Details

As discussed in this thread and #1254, Jib is working as intended to package spring-boot-devtools in the image, and the user should properly configure the dependency if they do not want it at runtime. However, we decided to create the extension to help people avoid the chore of manually setting up profiles in their projects.

[goto1134]

update: use jib-spring-boot-extension to exclude spring-boot-devtools