Dockerfile

# 1st stage, build the app
FROM maven:3.9.6-eclipse-temurin-21-jammy as build

WORKDIR /helidon
#RUN mkdir -p /helidon/target/classes # for weaving

# Create a first layer to cache the "Maven World" in the local repository.
# Incremental docker builds will always resume after that, unless you update
# the pom
ADD pom.xml .
RUN mvn package -Dmaven.test.skip -Declipselink.weave.skip

# Do the Maven build!
# Incremental docker builds will resume here when you change sources
ADD src src

# RUN mvn package -DskipTests
# Switch mvn command above when you'd like to enable jaeger 
RUN mvn package -P db-h2,tracing-jaeger -DskipTests

RUN echo "done!"

# 2nd stage, build the runtime image
FROM openjdk:21-jdk-slim
WORKDIR /helidon

# Copy the binary built in the 1st stage
COPY --from=build /helidon/target/helidon-mp-demo.jar ./
COPY --from=build /helidon/target/libs ./libs

CMD ["java", "-jar", "helidon-mp-demo.jar"]

EXPOSE 8080
#EXPOSE 50051