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Minor FAQ update #2439

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Apr 30, 2020
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Minor FAQ update #2439

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2 changes: 1 addition & 1 deletion docs/faq.md
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Expand Up @@ -242,7 +242,7 @@ Normally, the plugin sets a default entrypoint for java applications, or lets yo

The intention of Jib is to add individual class files, resources, and dependency JARs into the container instead of putting a JAR. This lets Jib choose an opinionated, optimal layout for the application on the container image, which also allows it to skip the extra JAR-packaging step.

However, you can set `<containerizingMode>packaged` (Maven) or `jib.containerizingMode = 'packaged'` (Gradle) to containerize a JAR, but note that your application will always be run via `java -cp ... your.MainClass` (even if it is an executable JAR). Some disadvantages:
However, you can set `<containerizingMode>packaged` (Maven) or `jib.containerizingMode = 'packaged'` (Gradle) to containerize a JAR, but note that your application will always be run via `java -cp ... your.MainClass` (even if it is an executable JAR). Some disadvantages of setting `containerizingMode='packaged'`:

- You need to run the JAR-packaging step (`mvn package` in Maven or the `jar` task in Gradle).
- Reduced granularity in building and caching: if any of your Java source files or resource files are updated, not only the JAR has to be rebuilt, but the entire layer containing the JAR in the image has to be recreated and pushed to the destination.
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