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serving/samples/helloworld-kotlin: simplify and standardize Dockerfile (#516)

This commit is contained in:
Adam Ross 2018-11-26 02:39:38 -07:00 committed by Knative Prow Robot
parent 7b76630c7d
commit 04dc9976d9
2 changed files with 47 additions and 10 deletions
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28
serving/samples/helloworld-kotlin/Dockerfile
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@ -1,7 +1,25 @@
FROM gradle
# Use the official gradle image to create a build artifact.
# https://hub.docker.com/_/gradle
FROM gradle as builder
ADD build.gradle ./build.gradle
ADD src ./src
RUN gradle clean build
ENTRYPOINT ["java","-jar","-Djava.security.egd=file:/dev/./urandom","/home/gradle/build/libs/gradle.jar"]
# Copy local code to the container image.
COPY build.gradle .
COPY src ./src
# Build a release artifact.
RUN gradle clean build --no-daemon
# 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 /home/gradle/build/libs/gradle.jar /helloworld.jar
# Configure and document the service HTTP port.
ENV PORT 8080
EXPOSE $PORT
# Run the web service on container startup.
CMD [ "java", "-jar", "-Djava.security.egd=file:/dev/./urandom", "/helloworld.jar" ]

29
serving/samples/helloworld-kotlin/README.md
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@ -106,12 +106,31 @@ The following instructions recreate the source files from this folder.
5. Create a file named `Dockerfile` and copy the code block below into it.
```docker
FROM gradle
# Use the official gradle image to create a build artifact.
# https://hub.docker.com/_/gradle
FROM gradle as builder
ADD build.gradle ./build.gradle
ADD src ./src
RUN gradle clean build
ENTRYPOINT ["java","-jar","-Djava.security.egd=file:/dev/./urandom","/home/gradle/build/libs/gradle.jar"]
# Copy local code to the container image.
COPY build.gradle .
COPY src ./src
# Build a release artifact.
RUN gradle clean build --no-daemon
# 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 /home/gradle/build/libs/gradle.jar /helloworld.jar
# Configure and document the service HTTP port.
ENV PORT 8080
EXPOSE $PORT
# Run the web service on container startup.
CMD [ "java", "-jar", "-Djava.security.egd=file:/dev/./urandom", "/helloworld.jar" ]
```
6. Create a new file, `service.yaml` and copy the following service definition