Permission denied # rb_sysopen - log/application.log (Errno::EACCES) - ruby-on-rails-4

Question

Hi I am using docker to deploy my rails app using phusion/passenger image. Here is my Dockerfile:
FROM phusion/passenger-ruby22:0.9.19
# set correct environment variables
ENV HOME /root
ENV RAILS_ENV production
# Use baseimage-docker's init system.
CMD ["/sbin/my_init"]
# Expose Nginx HTTP service
EXPOSE 80
# Start Nginx / Passenger
RUN rm -f /etc/service/nginx/down
# Remove the default site
RUN rm /etc/nginx/sites-enabled/default
# Add the nginx site and config
ADD nginx.conf /etc/nginx/sites-enabled/nginx.conf
ADD rails-env.conf /etc/nginx/main.d/rails-env.conf
# Let ensure these packages are already installed
# otherwise install them anyways
RUN apt-get update && apt-get install -y build-essential \
nodejs \
libpq-dev
# bundle gem and cache them
WORKDIR /tmp
ADD Gemfile /tmp/
ADD Gemfile.lock /tmp/
RUN gem install bundler
RUN bundle install
# Add rails app
ADD . /home/app/webapp
WORKDIR /home/app/webapp
RUN touch log/delayed_job.log log/production.log log/
RUN chown -R app:app /home/app/webapp
RUN RAILS_ENV=production rake assets:precompile
# Clean up APT and bundler when done.
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
I am getting permission issue for tmp and log files.
web_1 | [ 2016-07-19 08:45:12.6653 31/7ff812726700 age/Cor/App/Implementation.cpp:304 ]: Could not spawn process for application /home/app/webapp: An error occurred while starting up the preloader.
web_1 | Error ID: 42930e85
web_1 | Error details saved to: /tmp/passenger-error-9DeJ86.html
web_1 | Message from application: Permission denied # rb_sysopen - log/logentries.log (Errno::EACCES)
web_1 | /usr/lib/ruby/2.2.0/logger.rb:628:in `initialize'
web_1 | /usr/lib/ruby/2.2.0/logger.rb:628:in `open'
web_1 | /usr/lib/ruby/2.2.0/logger.rb:628:in `open_logfile'
web_1 | /usr/lib/ruby/2.2.0/logger.rb:584:in `initialize'
web_1 | /usr/lib/ruby/2.2.0/logger.rb:318:in `new'
web_1 | /usr/lib/ruby/2.2.0/logger.rb:318:in `initialize'
web_1 | /var/lib/gems/2.2.0/gems/le-2.7.2/lib/le/host/http.rb:37:in `new'
web_1 | /var/lib/gems/2.2.0/gems/le-2.7.2/lib/le/host/http.rb:37:in `initialize'
I tried to give chmod -R 665/775/777 log/ and still didn't fixed the problem.
Thanks

Answer 1

Rearrange your line RUN RAILS_ENV=production rake assets:precompile first then RUN chown -R app:app /home/app/webapp(after your rake task) So, It should be something like this:
RUN RAILS_ENV=production rake assets:precompile
RUN chown -R app:app /home/app/webapp