Question

我试图将我的应用设置为在生产模式下运行，并且我在Dockerfile中专门构建了这个行的资产文件夹时遇到了问题：

RUN bundle exec rake RAILS_ENV=production DATABASE_URL=postgresql://user:pass@127.0.0.1/dbname SECRET_TOKEN=dummytoken assets:precompile

数据库只是一条虚线。问题是，当它运行rake时，似乎看不到env变量，并且在初始化carrierwave.rb时出现以下错误

rake aborted!
ArgumentError: Missing required arguments: aws_access_key_id, aws_secret_access_key
/usr/local/bundle/gems/fog-core-1.42.0/lib/fog/core/service.rb:244:in `validate_options'
/usr/local/bundle/gems/fog-core-1.42.0/lib/fog/core/service.rb:268:in `handle_settings'
/usr/local/bundle/gems/fog-core-1.42.0/lib/fog/core/service.rb:98:in `new'
/usr/local/bundle/gems/fog-core-1.42.0/lib/fog/core/services_mixin.rb:16:in `new'
/usr/local/bundle/gems/fog-core-1.42.0/lib/fog/storage.rb:27:in `new'
/usr/local/bundle/gems/carrierwave-0.11.2/lib/carrierwave/uploader/configuration.rb:83:in `eager_load_fog'
/usr/local/bundle/gems/carrierwave-0.11.2/lib/carrierwave/uploader/configuration.rb:96:in `fog_credentials='
/mnt/hgfs/Projects/livingrecipe/config/initializers/carrierwave.rb:3:in `block in <top (required)>'
/usr/local/bundle/gems/carrierwave-0.11.2/lib/carrierwave/uploader/configuration.rb:118:in `configure'
/usr/local/bundle/gems/carrierwave-0.11.2/lib/carrierwave.rb:14:in `configure'
/mnt/hgfs/Projects/livingrecipe/config/initializers/carrierwave.rb:1:in `<top (required)>'

还有一些错误的行，但是第一行说明了这一切，并且aws_access_key_id和aws_secret_access_key的ENV变量似乎没有加载。如果我在没有尝试预编译资产的情况下运行它，一切正常，但我需要预先编译资产以使它们对nginx可见

我确实发现，为了修复我可以用它们取代ENV变量，这就是遇到麻烦的代码：

CarrierWave.configure do |config|

  config.fog_credentials = {
    provider:               'AWS',                             # required
    aws_access_key_id:      ENV['AWS_ACCESS_KEY_ID'],            # required
    aws_secret_access_key:  ENV['AWS_SECRET_ACCESS_KEY'],     # required
    region:                 'us-west-2'                        # optional, defaults to 'us-east-1'
  }
  config.fog_directory  = ENV['S3_BUCKET_NAME']               # required
  #config.fog_host       = 'https://assets.example.com'           # optional, defaults to nil
  #config.fog_public     = false                                  # optional, defaults to true
  config.fog_attributes = {'Cache-Control'=>'max-age=315576000'}  # optional, defaults to {}
end

所以我只需输入键即可使用......但很明显，长期使用这些键不是很好的解决方案。

Answer 1

你的问题有所改变，所以我要解决你的最后一句话：

所以我只需输入键即可使用......但很明显，长期使用这些键不是很好的解决方案。

如果您确定要在构建期间处理此问题，而不是将rake任务添加到command条目，则可以在您的# compose.yml version: '2' services: app: # ... build: context: . args: # This will make your variables available during the # "build" phase. # You can hardcode these values here, or better, # add them to a .env file, whose contents # Docker/Compose will make available during the build. - AWS_ACCESS_KEY_ID - AWS_SECRET_ACCESS_KEY - DATABASE_URL - SECRET_TOKEN environment: # You should also add these values to your application's # environment. # You can hardcode these values here, or better, # add them to a .env file, whose contents # Docker/Compose will make available to your running container. - AWS_ACCESS_KEY_ID - AWS_SECRET_ACCESS_KEY - DATABASE_URL - SECRET_TOKEN条目中设置build args docker-compose.yml配置文件。

# Dockerfile
# ...
ARG AWS_ACCESS_KEY_ID
ARG AWS_SECRET_ACCESS_KEY
ARG DATABASE_URL
ARG SECRET_TOKEN
# these values will now be available to your rake task 
# in ENV['AWS_ACCESS_KEY_ID'], etc.
RUN bundle exec rake RAILS_ENV=production assets:precompile

然后，您可以在Dockerfile中声明并使用build args：

from sqlite3 import *
from webbrowser import *

    #retrieve a text file
    while inc != len(categories):
        file_open = open(categories[inc]+'.txt','U')
    #assign the category
        category = categories[inc]
    #run the loop to populate the table popularity
        for each_ln in file_open:
    #assign the variables.
            tab_index = each_ln.find('\t')
            PersonNumber = each_ln[0:tab_index]
            value = each_ln[tab_index + 1:len(each_ln)]
    #populate the database.        
            TH2_db.execute("INSERT INTO popularity VALUES (?,?,?)" \
                           , (PersonNumber, category, value))
    #increment to move onto the next textfile        
        inc = inc + 1

Docker使用rake资产构建构建：预编译

1 个答案: