Docker Sidekiq Starting - Rails App with Puma - ruby-on-rails

Question

The following Dockerfile it's supposed to start sidekiq when the container it's started:
FROM phusion/baseimage:0.9.18
ENV RUBY_MAJOR "2.0"
ENV RUBY_VERSION "2.0.0-p643"
ENV RUBYGEMS_VERSION "2.5.2"
ENV BUNDLER_VERSION "1.11.2"
ENV NODE_VERSION "5.5.0"
ENV BOWER_VERSION "1.7.6"
ENV APT_PACKAGES " \
git imagemagick \
gcc g++ make patch binutils libc6-dev \
libjemalloc-dev libffi-dev libssl-dev libyaml-dev zlib1g-dev libgmp-dev \
libxml2-dev libxslt1-dev libpq-dev libreadline-dev libsqlite3-dev htop \
"
ENV APT_REMOVE_PACKAGES "openssh-server"
RUN apt-get update && apt-get -y dist-upgrade
RUN apt-get install -y $APT_PACKAGES
RUN apt-get remove --purge -y $APT_REMOVE_PACKAGES
RUN apt-get autoremove --purge -y
WORKDIR /tmp
RUN curl -o ruby.tgz \
"https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR}/ruby-${RUBY_VERSION}.tar.gz" && \
tar -xzf ruby.tgz && \
cd ruby-${RUBY_VERSION} && \
./configure --enable-shared --with-jemalloc --disable-install-doc && \
make -j4 && \
make install && \
rm /usr/local/lib/libruby-static.a
ENV GEM_SPEC_CACHE "/tmp/gemspec"
RUN echo 'gem: --no-document' > $HOME/.gemrc
RUN gem update --system ${RUBYGEMS_VERSION}
RUN gem install -v ${BUNDLER_VERSION} bundler
RUN curl https://nodejs.org/dist/v${NODE_VERSION}/node-v${NODE_VERSION}-linux-x64.tar.gz \
|tar -xz -C /usr --strip-components=1
RUN npm install bower#${BOWER_VERSION} -g
RUN rm /etc/my_init.d/00_regen_ssh_host_keys.sh
RUN rm -r /etc/service/sshd
RUN useradd -m app
RUN mkdir /home/app/webapp && chown app:app -R /home/app
RUN rm -rf /tmp/* /var/tmp/* /var/lib/apt /var/lib/dpkg /usr/share/man /usr/share/doc
WORKDIR /home/app/webapp
# Copy the Gemfile as well as the Gemfile.lock and install
# the RubyGems. This is a separate step so the dependencies
# will be cached unless changes to one of those two files
# are made.
COPY Gemfile Gemfile.lock ./
RUN gem install bundler && bundle install --jobs 20 --retry 5 --without development test
# Copy the main application.
COPY . ./
COPY .cron/daily_run_app /etc/cron.daily/
RUN chmod a+x /etc/cron.daily/daily_run_app
# Precompile Rails assets
RUN bundle exec rake assets:precompile
EXPOSE 3000
COPY .conf_files/sidekiq.sh /etc/service/sidekiq/run
COPY .conf_files/appserver.sh /etc/service/appserver/run
# Start puma
RUN chmod a+x /etc/service/appserver/run
ENTRYPOINT /etc/service/appserver/run
#ENTRYPOINT bundle exec puma -C config/puma.rb
# Start sidekiq
#ENTRYPOINT bundle exec sidekiq -L log/sidekiq.log
#RUN chmod a+x /etc/service/sidekiq/run
#ENTRYPOINT /etc/service/sidekiq/run
The script /etc/service/appserver/run:
#!/bin/bash
SIDEKIQ_THREADS=${SIDEKIQ_THREADS:-16}
cd /home/app/webapp
exec chpst -u app bundle exec puma -C config/puma.rb \
2>&1 |logger -t appserver
SIDEKIQ_CONFIG="/home/app/webapp/config/sidekiq.yml"
exec chpst -u root bundle exec sidekiq -t 5 -c $SIDEKIQ_THREADS -C $SIDEKIQ_CONFIG \
2>&1 |logger -t sidekiq
You can enquequed jobs because you can see that in the sidekiq dasboard, but they are not going to be processed because sidekiq it's not started, but it should be started with the Dockerfile and Script that are shown above. So when you type manually:
bundle exec sidekiq
Right here sidekiq it's started and the jobs now could be processed. what could be happening?