docs/code-samples/community/serving/helloworld-java-micronaut/Dockerfile

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Docker

# Use the official maven/Java 8 image to create a build artifact.
# https://hub.docker.com/_/maven
FROM maven:3.5-jdk-8-alpine AS builder
# Copy local code to the container image.
WORKDIR /app
COPY pom.xml .
COPY src ./src
# Build a release artifact.
RUN mvn package -DskipTests
# Use AdoptOpenJDK for base image.
# It's important to use OpenJDK 8u191 or above that has container support enabled.
# https://hub.docker.com/r/adoptopenjdk/openjdk8
# https://docs.docker.com/develop/develop-images/multistage-build/#use-multi-stage-builds
FROM adoptopenjdk/openjdk8:jdk8u202-b08-alpine-slim
# Copy the jar to the production image from the builder stage.
COPY --from=builder /app/target/helloworld-1.0.0-SNAPSHOT.jar /helloworld.jar
# Run the web service on container startup.
CMD ["java","-jar","/helloworld.jar"]