Dockerfile-maven: Exception caught: Must specify baseImage if dockerDirectory is null

[Somebody25]

Hello,

I tied to follow the spring tutorial to docker but got the following exception when trying to build the docker image:

[INFO] --- docker-maven-plugin:1.0.0:build (default-cli) @ app ---
[INFO] Using authentication suppliers: [ConfigFileRegistryAuthSupplier]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 13.449 s
[INFO] Finished at: 2018-04-30T13:25:27+02:00
[INFO] Final Memory: 56M/717M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.spotify:docker-maven-plugin:1.0.0:build (default-cli) on project app: Exception caught: Must specify baseImage if dockerDirectory is null -> [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

My POM config:

<plugin>
                <groupId>com.spotify</groupId>
                <artifactId>dockerfile-maven-plugin</artifactId>
                <version>1.3.6</version>
                <configuration>
                    <repository>foo/${project.artifactId}</repository>
                    <buildArgs>
                        <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE>
                    </buildArgs>
                </configuration>
            </plugin>

I don't know if it's relevant but I also hat do add the following to the maven settings.xml:

  <pluginGroups>
    <pluginGroup>com.spotify</pluginGroup>
</pluginGroups>

Otherwise the project also failed to build.
My Dockerfile is in the root directory of the project and looks like this:

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ARG JAR_FILE
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

Thanks for the help!

[zhangshexin]

I've had this problem, too. Have you solved it

[Somebody25]

Sadly, I have not. Currently, I am manually building the docker image but it would be really great to have this maven integration.

[zhangshexin]

                             <executions>
                <execution>
                    <id>default</id>
                    <phase>install</phase>
                    <goals>
                        <goal>build</goal>
                    </goals>
                </execution>
            </executions>

You can try it out.

[mattnworb]

Note that the plugin you are using is not the one in this repo: https://github.com/spotify/docker-maven-plugin

Check the documentation of that plugin - you have to either supply info in the pom so that the plugin can generate a Dockerfile (such as baseImage), or specify a Dockerfile to use.

[huxxx]

I've had this problem, too

[PaulGobin]

Try this:
The issue was simple - the command is mvn clean package dockerfile:build and not mvn clean package docker:build
Thanks to Telax1985

[krishnaputhran]

PaulGobin you nailed it, after a lot of struggle this solution worked for me. If you can, can you explain whats the difference between the two. As in some places I used the later one and it also worked

[jmslick]

Paul's solution helped me too. I had upgraded from docker-mavin-plugin to dockerfile-maven-plugin but didn't know enough to change the command-line parameter from docker:build to dockerfile:build.

[warrenwuz]

good！