Docker commands are not in order

[aabed]

build.sbt

// Docker Configuration
maintainer in Docker := "MENA Commerce"

dockerCommands ++= Seq(Cmd("RUN", "ls"))

version in Docker := "build-" + buildNumber

dockerRepository := Some("registry")

dockerExposedPorts := Seq(9000)

dockerUpdateLatest := true
dockerEntrypoint  := Seq("bin/zoidbergggg")

Result

FROM java:latest
MAINTAINER MENA Commerce
WORKDIR /opt/docker
ADD opt /opt
RUN ["chown", "-R", "daemon:daemon", "."]
EXPOSE 9000
USER daemon
ENTRYPOINT ["bin/zoidbergggg"]
CMD []
RUN ls

Expected Result

FROM java:latest
MAINTAINER MENA Commerce
WORKDIR /opt/docker
ADD opt /opt
RUN ["chown", "-R", "daemon:daemon", "."]
RUN ls
EXPOSE 9000
USER daemon
ENTRYPOINT ["bin/zoidbergggg"]
CMD []

[muuki88]

dockerCommands is a sequence. If you append something with ++= it will be placed at the end of the list, which is what you see in your result.

There is a small section with examples on how to customize your docker command sequence.