I have created an application in Elastic Beanstalk to host a play framework 2 app there using instructions from this project.
I have packaged the project exactly like Do
Add a chmod command to make your file executable:
RUN ["chmod", "+x", "bin/myApp"]
So your Dockerfile will be:
FROM dockerfile/java
MAINTAINER Cristi Boariu
EXPOSE 9000
ADD files /
WORKDIR /opt/docker
RUN ["chown", "-R", "daemon", "."]
USER daemon
RUN ["chmod", "+x", "bin/myApp"]
ENTRYPOINT ["bin/mytweetalerts"]
CMD []