Question

我正在尝试为开发环境运行docker容器。我使用下面的docker文件

FROM phusion/passenger-ruby22:latest
# Set correct environment variables.
ENV HOME /root

# 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/webapp.conf
ADD rails-env.conf /etc/nginx/main.d/rails-env.conf

# Install bundle of gems
WORKDIR /tmp
ADD Gemfile /tmp/
ADD Gemfile.lock /tmp/
RUN bundle install

# Add the Rails app
ADD . /home/app/webapp
RUN chown -R app:app /home/app/webapp

# Clean up APT and bundler when done.
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

nginx.conf如下

# webapp.conf

server {
  listen 80;
  server_name localhost;
  root /home/app/webapp/public;
  passenger_enabled on;
  passenger_user app;
  passenger_ruby /usr/bin/ruby2.2;
}

和Rails Env文件如下，

# rails-env.conf

# Set Nginx config environment based on
# the values set in the .env file

env PASSENGER_APP_ENV;
env RAILS_ENV;
env SECRET_KEY_BASE;
env APP_DEV_DB_HOST;
env APP_DEV_DB_DATABASE;
env APP_DEV_DB_PORT;
env APP_DEV_DB_USERNAME;
env APP_DEV_DB_PASSWORD;

我将DB（MySQL）保留在容器外部并与VM IP地址绑定。

构建docker镜像后，现在我正在尝试运行rake db:setup但是我收到如下消息，

sudo docker run -i -t -e "RAILS_ENV=development" -e "APP_DEV_DB_HOST=myipaddress" -e "APP_DEV_DB_DATABASE=SampleApp_Development" -e "APP_DEV_DB_PORT=3306" -e "APP_DEV_DB_USERNAME=sampleapp_dev" -e "APP_DEV_DB_PASSWORD=pass_dev" -e  "PASSENGER_APP_ENV=development" sample_base rake db:setup

rake aborted!
    No Rakefile found (looking for: rakefile, Rakefile, rakefile.rb, Rakefile.rb)

    (See full trace by running task with --trace)

同时如果我使用bash运行它，我可以在容器中运行rake db:setup

很想知道造成这个问题的原因！

Answer 1

我希望这是因为您的WORKDIR设置为/tmp;尝试在/home/app/webapp之后将其设置为RUN bundle install。

我还注意到以下内容：

此行不会保存任何空格RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*;这些文件仍然存在于以前的图层中。
您在运行时覆盖CMD指令（CMD ["/sbin/my_init"]）;所以这个剧本中的任何内容都不会被运行。

Docker容器rake文件错误

1 个答案: