docs/code-samples/serving/hello-world/helloworld-java-spring/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 the Official OpenJDK image for a lean production stage of our multi-stage build.
# https://hub.docker.com/_/openjdk
# https://docs.docker.com/develop/develop-images/multistage-build/#use-multi-stage-builds
FROM openjdk:8-jre-alpine
# Copy the jar to the production image from the builder stage.
COPY --from=builder /app/target/helloworld-*.jar /helloworld.jar
# Run the web service on container startup.
CMD ["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "/helloworld.jar"]