I have my quarkus (version 3.9) app that uses quarkus-google-cloud-firebase-admin plugin (version 2.11.0). I defined my Google credentials in a file called application_default_credentials.json and (following the guide lines) I defined quarkus.google.cloud.service-account-location property in application.property in this way:

quarkus.google.cloud.service-account-location=src\main\resources\application_default_credentials.json

In my local machine (with dev profile) all works fine. In production I get this error:

2024-09-05 15:15:45 2024-09-05 13:15:45,022 DEBUG [io.ver.ext.web.RoutingContext] (vert.x-eventloop-thread-3) RoutingContext failure (500): java.lang.RuntimeException: Error injecting com.google.firebase.auth.FirebaseAuth io.quarkiverse.googlecloudservices.firebase.admin.runtime.authentication.http.DefaultFirebaseIdentityProvider.auth
2024-09-05 15:15:45     at io.quarkiverse.googlecloudservices.firebase.admin.runtime.authentication.http.DefaultFirebaseIdentityProvider_Bean.doCreate(Unknown Source)
2024-09-05 15:15:45     ... 69 more
2024-09-05 15:15:45 Caused by: jakarta.enterprise.inject.CreationException: java.io.FileNotFoundException: src/main/resources/application_default_credentials.json (No such file or directory)
2024-09-05 15:15:45     at io.quarkiverse.googlecloudservices.common.GcpCredentialProducer_ProducerMethod_googleCredential_ZtOjNbKgWzVHMIt1D1Qv1hwSeRY_Bean.create(Unknown Source)
2024-09-05 15:15:45     at io.quarkiverse.googlecloudservices.common.GcpCredentialProducer_ProducerMethod_googleCredential_ZtOjNbKgWzVHMIt1D1Qv1hwSeRY_Bean.create(Unknown Source)
2024-09-05 15:15:45     at io.quarkus.arc.impl.AbstractSharedContext.createInstanceHandle(AbstractSharedContext.java:119)
2024-09-05 15:15:45     at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:38)
2024-09-05 15:15:45     at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:35)
2024-09-05 15:15:45     at io.quarkus.arc.impl.LazyValue.get(LazyValue.java:32)
2024-09-05 15:15:45     at io.quarkus.arc.impl.ComputingCache.computeIfAbsent(ComputingCache.java:69)
2024-09-05 15:15:45     at io.quarkus.arc.impl.ComputingCacheContextInstances.computeIfAbsent(ComputingCacheContextInstances.java:19)
2024-09-05 15:15:45     at io.quarkus.arc.impl.AbstractSharedContext.get(AbstractSharedContext.java:35)
2024-09-05 15:15:45     at io.quarkiverse.googlecloudservices.common.GcpCredentialProducer_ProducerMethod_googleCredential_ZtOjNbKgWzVHMIt1D1Qv1hwSeRY_Bean.get(Unknown Source)
2024-09-05 15:15:45     at io.quarkiverse.googlecloudservices.common.GcpCredentialProducer_ProducerMethod_googleCredential_ZtOjNbKgWzVHMIt1D1Qv1hwSeRY_Bean.get(Unknown Source)
2024-09-05 15:15:45     ... 93 more
2024-09-05 15:15:45 Caused by: java.io.FileNotFoundException: src/main/resources/application_default_credentials.json (No such file or directory)
2024-09-05 15:15:45     at java.base/java.io.FileInputStream.open0(Native Method)
2024-09-05 15:15:45     at java.base/java.io.FileInputStream.open(FileInputStream.java:213)
2024-09-05 15:15:45     at java.base/java.io.FileInputStream.<init>(FileInputStream.java:152)
2024-09-05 15:15:45     at java.base/java.io.FileInputStream.<init>(FileInputStream.java:106)
2024-09-05 15:15:45     at io.quarkiverse.googlecloudservices.common.GcpCredentialProducer.googleCredential(GcpCredentialProducer.java:48)
2024-09-05 15:15:45     at io.quarkiverse.googlecloudservices.common.GcpCredentialProducer_ProducerMethod_googleCredential_ZtOjNbKgWzVHMIt1D1Qv1hwSeRY_Bean.doCreate(Unknown Source)
2024-09-05 15:15:45     ... 104 more

I use the default Quarkus native Dockerfile:

    FROM maven:3.9.6-eclipse-temurin-21-alpine AS builder
    RUN mkdir /build
    ADD . /build/
    
    WORKDIR /build
    RUN mvn package
    
    FROM registry.access.redhat.com/ubi8/openjdk-21:1.18
    
    ENV LANG='en_US.UTF-8' LANGUAGE='en_US:en'
    
    # We make four distinct layers so if there are application changes the library layers can be re-used
    COPY --from=builder --chown=185 /build/target/quarkus-app/lib/ /car/lib/
    COPY --from=builder --chown=185 /build/target/quarkus-app/*.jar /car/
    COPY --from=builder --chown=185 /build/target/quarkus-app/app/ /car/app/
    COPY --from=builder --chown=185 /build/target/quarkus-app/quarkus/ /car/quarkus/
    
    EXPOSE 8080:8080
    USER 185
    ENV AB_JOLOKIA_OFF=""
    ENV JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager"
    ENV JAVA_OPTS_APPEND="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager"
    ENV JAVA_APP_JAR="/car/quarkus-run.jar"
    
    ENTRYPOINT [ "/opt/jboss/container/java/run/run-java.sh" ]

In docker machine I have:

And the .jar file is:

So, the problem is java.io.FileNotFoundException: src/main/resources/application_default_credentials.json (No such file or directory). Why in dev all works fine and in prod not? What is the right path to use in application.properties?