Can it directly refer to Dockerfile to build the image?

[ningyu1]

Use the Dockerfile that already exists in the project to generate the docker image directly at package time?
No relevant instructions were found in the document.
If so, please provide a link, thanks.

[coollog]

Hi @ningyu1 , Jib is intended to allow Java developers to use the tools they are familiar with to build containers for their Java applications. Dockerfiles, by design, are not supported. Is there something you are doing in your Dockerfile that you need?

[ningyu1]

@coollog Yes, my dockerfile has some extra processing.

I need to translate dockerfile into the following XML description as an example. right？

<configuration>
  <from>
    <image>openjdk:alpine</image>
  </from>
  <to>
    <image>localhost:5000/my-image:built-with-jib</image>
    <credHelper>osxkeychain</credHelper>
  </to>
  <container>
    <jvmFlags>
      <jvmFlag>-Xms512m</jvmFlag>
      <jvmFlag>-Xdebug</jvmFlag>
      <jvmFlag>-Xmy:flag=jib-rules</jvmFlag>
    </jvmFlags>
    <mainClass>mypackage.MyApp</mainClass>
    <args>
      <arg>some</arg>
      <arg>args</arg>
    </args>
    <ports>
      <port>1000</port>
      <port>2000-2003/udp</port>
    </ports>
    <format>OCI</format>
  </container>
</configuration>

[coollog]

Yes, you would need to add the corresponding XML description.

[breandan]

The Gradle DSL is pretty nice. I wonder if there is a way to support a small subset of the Docker instructions so that it closely resembles the Dockerfile syntax...

[briandealwis]

What additional steps are you performing @breandan?

[coollog]

Closing unless there's any instructions that need support in Jib.