在介绍Foreman之前，我已经成功部署了Rails应用程序。我当时使用的是this guide，但是尝试了几种变体，这就是我现在的位置。
app.yml：
entrypoint: bundle exec foreman start
env: flex
runtime: ruby
Procfile：
web: bundle exec puma -C config/puma.rb
worker: bundle exec sidekiq -q default -q mailers
Stacktrace：
Updating service [default] (this may take several minutes)...failed.
ERROR: (gcloud.app.deploy) Error Response: [9]
Application startup error:
bundler: failed to load command: foreman (/app/vendor/bundle/ruby/2.4.0/bin/foreman)
ArgumentError: wrong number of arguments (given 1, expected 2)
/app/vendor/bundle/ruby/2.4.0/gems/dotenv-2.4.0/lib/dotenv/environment.rb:7:in `initialize'
/app/vendor/bundle/ruby/2.4.0/gems/foreman-0.63.0/lib/foreman/engine.rb:172:in `new'
/app/vendor/bundle/ruby/2.4.0/gems/foreman-0.63.0/lib/foreman/engine.rb:172:in `load_env'
/app/vendor/bundle/ruby/2.4.0/gems/foreman-0.63.0/lib/foreman/cli.rb:136:in `load_environment!'
/app/vendor/bundle/ruby/2.4.0/gems/foreman-0.63.0/lib/foreman/cli.rb:38:in `start'
/app/vendor/bundle/ruby/2.4.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
/app/vendor/bundle/ruby/2.4.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
/app/vendor/bundle/ruby/2.4.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
/app/vendor/bundle/ruby/2.4.0/gems/thor-0.20.0/lib/thor/base.rb:466:in `start'
/app/vendor/bundle/ruby/2.4.0/gems/foreman-0.63.0/bin/foreman:7:in `<top (required)>'
/app/vendor/bundle/ruby/2.4.0/bin/foreman:22:in `load'
/app/vendor/bundle/ruby/2.4.0/bin/foreman:22:in `<top (required)>'
当我不使用工头（例如bundle exec rackup --port $PORT）进行部署时，它将按预期部署并运行。
我尝试将entrypoint设置为：bundle exec foreman start -m web=1,worker=2…我不知道它还会期望什么其他参数。