我目前正在尝试在 Dokku 上部署我的 Rails API，我一直遇到这个错误，上面写着“Proc 入口点 [procname] 不存在。请检查你的 Procfile”。我不确定问题是什么以及如何设置入口点，我已经尝试过全面搜索并且无法找到正在实施的示例。
这是我尝试推送到 dokku master 时的完整日志：
Counting objects: 232, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (212/212), done.
Writing objects: 100% (232/232), 35.48 KiB | 2.22 MiB/s, done.
Total 232 (delta 83), reused 0 (delta 0)
remote: Resolving deltas: 100% (83/83), done.
-----> Cleaning up...
-----> Building iris-lune-api from herokuish...
-----> Adding BUILD_ENV to build environment...
-----> Fetching custom buildpack
-----> Ruby app detected
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.6.4
-----> Installing dependencies using bundler 1.15.2
Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
Using rake 12.3.3
Using concurrent-ruby 1.1.5
Using i18n 1.6.0
Using minitest 5.11.3
Using thread_safe 0.3.6
Using tzinfo 1.2.5
Using activesupport 5.2.3
Using builder 3.2.3
Using erubi 1.8.0
Using mini_portile2 2.4.0
Using nokogiri 1.10.4
Using rails-dom-testing 2.0.3
Using crass 1.0.4
Using loofah 2.2.3
Using rails-html-sanitizer 1.2.0
Using actionview 5.2.3
Using rack 2.0.7
Using rack-test 1.1.0
Using actionpack 5.2.3
Using nio4r 2.5.1
Using websocket-extensions 0.1.4
Using websocket-driver 0.7.1
Using actioncable 5.2.3
Using globalid 0.4.2
Using activejob 5.2.3
Using mini_mime 1.0.2
Using mail 2.7.1
Using actionmailer 5.2.3
Using activemodel 5.2.3
Using case_transform 0.2
Using jsonapi-renderer 0.2.2
Using active_model_serializers 0.10.10
Using arel 9.0.0
Using activerecord 5.2.3
Using mimemagic 0.3.3
Using marcel 0.3.3
Using activestorage 5.2.3
Using msgpack 1.3.1
Using bootsnap 1.4.5
Using bundler 1.17.2
Using method_source 0.9.2
Using pg 1.1.4
Using puma 3.12.1
Using rack-cors 1.0.3
Using thor 0.20.3
Using railties 5.2.3
Using sprockets 3.7.2
Using sprockets-rails 3.2.1
Using rails 5.2.3
Using stripe 5.1.1 from https://github.com/stripe/stripe-ruby (at master@1f80da4)
Bundle complete! 12 Gemfile dependencies, 50 gems now installed.
Gems in the groups development and test were not installed.
Bundled gems are installed into `./vendor/bundle`
Removing bundler (1.15.2)
Bundle completed (0.44s)
Cleaning up the bundler cache.
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
-----> Detecting rake tasks
-----> Detecting rails configuration
###### WARNING:
You set your `config.active_storage.service` to :local in production.
If you are uploading files to this app, they will not persist after the app
is restarted, on one-off dynos, or if the app has multiple dynos.
Heroku applications have an ephemeral file system. To
persist uploaded files, please use a service such as S3 and update your Rails
configuration.
For more information can be found in this article:
https://devcenter.heroku.com/articles/active-storage-on-heroku
###### WARNING:
We detected that some binary dependencies required to
use all the preview features of Active Storage are not
present on this system.
For more information please see:
https://devcenter.heroku.com/articles/active-storage-on-heroku
###### WARNING:
No Procfile detected, using the default web server.
We recommend explicitly declaring how to boot your server process via a Procfile.
https://devcenter.heroku.com/articles/ruby-default-web-server
-----> Discovering process types
Default types for -> rake, console, web
-----> Releasing iris-lune-api (dokku/iris-lune-api:latest)...
-----> Deploying iris-lune-api (dokku/iris-lune-api:latest)...
-----> App Procfile file found (/home/dokku/iris-lune-api/DOKKU_PROCFILE)
DOKKU_SCALE declares scale -> web=1 [procname]=1
-----> Attempting pre-flight checks
For more efficient zero downtime deployments, create a file CHECKS.
See http://dokku.viewdocs.io/dokku/deployment/zero-downtime-deploys/ for examples
CHECKS file not found in container: Running simple container check...
-----> Waiting for 10 seconds ...
-----> Default container check successful!
-----> Attempting pre-flight checks
Non web container detected: Running default container check...
-----> Waiting for 10 seconds ...
b442e9261dad2aa7c0590575295cf227c42fee5337729907e9382484effd8ab7
remote: App container failed to start!!
=====> iris-lune-api [procname] container output:
Proc entrypoint [procname] does not exist. Please check your Procfile
Proc entrypoint [procname] does not exist. Please check your Procfile
Proc entrypoint [procname] does not exist. Please check your Procfile
Proc entrypoint [procname] does not exist. Please check your Procfile
Proc entrypoint [procname] does not exist. Please check your Procfile
Proc entrypoint [procname] does not exist. Please check your Procfile
Proc entrypoint [procname] does not exist. Please check your Procfile
=====> end iris-lune-api [procname] container output
To 67.205.164.245:iris-lune-api
! [remote rejected] master -> master (pre-receive hook declined)