My Docker container will run a command from within the container, but not with ENTRYPOINT

Question

As stated in the title - after building an image via a Dockerfile, I can enter the image via run -i -t myimage /bin/bash, and then run the command I'd like - it works just fine.

However, doing ENTRYPOINT ['mycommand'] in the Dockerfile does not work. Please see below:

FROM ubuntu

MAINTAINER bkparso

RUN sed 's/main$/main universe/' -i /etc/apt/sources.list
RUN apt-get update
RUN apt-get upgrade -y

RUN apt-get install -y python-software-properties
RUN add-apt-repository ppa:webupd8team/java -y

RUN apt-get update
RUN echo oracle-java7-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections

RUN apt-get install -y oracle-java7-installer git unzip

RUN mkdir /opt/torquebox
RUN useradd torquebox -c"Torquebox system user" -M -ptorquebox
ADD http://torquebox.org/release/org/torquebox/torquebox-dist/3.0.1/torquebox-dist-3.0.1-bin.zip /tmp/tboxbin.zip
RUN unzip /tmp/tboxbin.zip -d /opt/torquebox
RUN ln -s /opt/torquebox/torquebox-3.0.1 /opt/torquebox/current
RUN chown -R torquebox:torquebox /opt/torquebox
RUN touch /etc/profile.d/torquebox.sh
RUN echo "export TORQUEBOX_HOME=/opt/torquebox/current" >> /etc/profile.d/torquebox.sh
RUN echo "export JBOSS_HOME=\$TORQUEBOX_HOME/jboss" >> /etc/profile.d/torquebox.sh
RUN echo "export JRUBY_HOME=\$TORQUEBOX_HOME/jruby" >> /etc/profile.d/torquebox.sh
RUN echo "PATH=\$JBOSS_HOME/bin:\$JRUBY_HOME/bin:\$PATH" >> /etc/profile.d/torquebox.sh

ENV TORQUEBOX_HOME /opt/torquebox/current
ENV JBOSS_HOME /opt/torquebox/current/jboss
ENV JRUBY_HOME /opt/torquebox/current/jruby
ENV PATH $JBOSS_HOME/bin:$JRUBY_HOME/bin:$PATH

RUN cp /opt/torquebox/current/jboss/bin/init.d/jboss-as-standalone.sh /etc/init.d/jboss-as-standalone
RUN mkdir /etc/jboss-as && touch /etc/jboss-as/jboss-as.conf
RUN echo "JBOSS_USER=torquebox" >> /etc/jboss-as/jboss-as.conf
RUN echo "JBOSS_HOME=/opt/torquebox/current/jboss" >> /etc/jboss-as/jboss-as.conf
RUN echo "JBOSS_PIDFILE=/var/run/torquebox/torquebox.pid" >> /etc/jboss-as/jboss-as.conf
RUN echo "JBOSS_CONSOLE_LOG=/var/log/torquebox/console.log" >> /etc/jboss-as/jboss-as.conf
RUN echo "JBOSS_CONFIG=standalone-ha.xml" >> /etc/jboss-as/jboss-as.conf
RUN update-rc.d jboss-as-standalone defaults

EXPOSE 6666 8080 8443 5445 8675

ENTRYPOINT ['/opt/torquebox/current/jruby/bin/torquebox']

CMD ["--help"]

/opt/torquebox/current/jruby/bin/torquebox --help works from within the container, but blows up (command not found) from ENTRYPOINT.

Any help would be appreciated.

Answer 1

ENTRYPOINT requires double quotes for some reason.

Changed ENTRYPOINT ['/opt/torquebox/current/jruby/bin/torquebox'] To ENTRYPOINT ["/opt/torquebox/current/jruby/bin/torquebox"]

And it loads.