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Use an official OpenJDK runtime as a parent image
FROM openjdk:8-jre-alpine
set shell to bash
source: https://stackoverflow.com/a/40944512/3128926
RUN apk update && apk add bash
Set the working directory to /app
WORKDIR /app
Copy the fat jar into the container at /app
COPY /target/docker-java-app-example.jar /app
Make port 8080 available to the world outside this container
EXPOSE 8080
Run jar file when the container launches
CMD ["java", "-jar", "docker-java-app-example.jar"]