Why I receive permission denied in Docker deployment?

Question

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

Answer 1

Here's what I did to solve this same issue, though I'm not sure which part specifically solved it.

My DockerFile looks like:

FROM dockerfile/java
MAINTAINER yourNameHere
EXPOSE 9000 9443
ADD files /
WORKDIR /opt/docker
RUN ["chown", "-R", "daemon", "."]
# Make sure myApp is excutable
RUN ["chmod", "+x", "bin/myApp"]
USER daemon
# If running a t1.micro or other memory limited instance
# be sure to limit play memory. This assumes play 2.3.x
ENTRYPOINT ["bin/myApp", "-mem", "512", "-J-server"]
CMD []

See https://www.playframework.com/documentation/2.3.x/ProductionConfiguration for info on setting jvm memory.

My Dockerrun.aws.json (also required) looks like:

{
  "AWSEBDockerrunVersion": "1",
  "Ports": [
    {
      "ContainerPort": "9000"
    }
  ]
}

Finally my play application lives in files/opt/docker with the run script in docker/bin. All this is zipped up and sent to EB.

Answer 2

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 <myemail>
EXPOSE 9000
ADD files /
WORKDIR /opt/docker
RUN ["chown", "-R", "daemon", "."]
USER daemon
RUN ["chmod", "+x", "bin/myApp"]

ENTRYPOINT ["bin/mytweetalerts"]
CMD []