duplicate service-registration in META-INF/services, failing the native-image build

[BartRobeyns]

When building a graalvm version of the service (using build-native-image.sh), I sometimes run into
Message: Multiple possible bean candidates found: [io.micronaut.jackson.ObjectMapperFactory, io.micronaut.jackson.ObjectMapperFactory]

This is caused by duplicate entries in META-INF/services/com.fasterxml.jackson.core.ObjectCodec: it contains com.fasterxml.jackson.databind.ObjectMapper twice.

This is because the ServicesResourceTransformer of the maven-shade plugin doesn't clean out an already existing service-registration (sounds like a bug in the transformer to me).

It can be worked around by running
./mvnw clean package
iso
./mvnw package
at the start of build-native-image.sh

[BartRobeyns]

If you want, I'll create a pull request to include the workaround in the script - but it's such a small thing a PR seems a bit over the top :)

[graemerocher]

This is already been fixed and we no longer include build-native-image.sh. Thanks