Build image failed w/o a clear error message with Maven plugin v0.9.7

Description of the issue: Build image failed w/o a clear error message with Maven plugin v0.9.7

Expected behaviour: An image is built and pushed to Docker hub.

Steps to reproduce:

• Set up docker hub credentials in Maven’s settings.xml
• Run mvn compile jib:build in the project root

Environment:

• Windows 10
• Maven 3.5.3
• Oracle JDK 1.8.0_172

jib-maven-plugin Configuration:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>io.plagov</groupId>
    <artifactId>jib-docker-demo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>com.google.cloud.tools</groupId>
                <artifactId>jib-maven-plugin</artifactId>
                <version>0.9.7</version>
                <configuration>
                    <to>
                        <image>registry.hub.docker.com/vplagov/image-built-with-jib</image>
                    </to>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Configuration in settings.xml:

<settings>
...
	<servers>
		<server>
			<id>registry.hub.docker.com</id>
			<username>my_username</username>
			<password>my_password</password>
		</server>
	</servers>
...
</settings>

Log output: full output after I run mvn compile jib:build command:

[INFO] Scanning for projects...
[INFO]
[INFO] ---------------------< io.plagov:jib-docker-demo >----------------------
[INFO] Building jib-docker-demo 1.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ jib-docker-demo ---
[WARNING] Using platform encoding (Cp1257 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ jib-docker-demo ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1257, i.e. build is platform dependent!
[INFO] Compiling 1 source file to C:\Users\vitali.plagov\IdeaProjects\jib-docker-demo\target\classes
[INFO]
[INFO] --- jib-maven-plugin:0.9.7:build (default-cli) @ jib-docker-demo ---
[WARNING] Base image 'gcr.io/distroless/java' does not use a specific image digest - build may not be reproducible
[INFO]
[INFO] Containerizing application to vplagov/image-built-with-jib...
[INFO]
[INFO] Retrieving registry credentials for registry.hub.docker.com...
[INFO] Getting base image gcr.io/distroless/java...
[INFO] Building dependencies layer...
[INFO] Building resources layer...
[INFO] Building classes layer...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.735 s
[INFO] Finished at: 2018-07-26T09:27:02+03:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.google.cloud.tools:jib-maven-plugin:0.9.7:build (default-cli) on project jib-docker-demo: Build image failed: C:\Users\vitali.plagov\IdeaProjects\jib-docker-demo\target\jib-cache\5063664208194952830.tmp -> C:\Users\vitali.plagov\IdeaProjects\jib-docker-demo\target\jib-cache\252a131556a09f39f95d58172fca18c51b4ba688a9c29b0fc1bdd118f8e9abb2.tar.gz -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

Additional Information: I tried with several other versions, like 0.9.0, 0.9.4 and 0.9.7. Unfortunatelly, still more or less the same output. Also, the day before I’ve managed to build an image and push it to Docker hub. I got an error with an authentication when I encrypted the password with Maven, but after I put my DockerID password in a plain text, then I’ve succesfully built and pushed an image.

[briandealwis]

I wondered that too, but we could hit it if we have two layers with the same file contents (e.g., pulling a base image that had such a layer). So I think it’s still possible, just a little less likely.

[coollog]

@briandealwis Nope! This was fixed in #622 and will be available in version 0.9.8.