我想通过使用这个buildpack在heroku上为我的面部检测node.js app安装opencv：https://github.com/slobdell/heroku-buildpack-python-opencv
所以我刚刚做了：
heroku buildpack:set https://github.com/slobdell/heroku-buildpack-python-opencv
但接下来我会收到这个错误：
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Fetching custom git buildpack... done
remote: -----> Python + OpenCV + Numpy + Scipy app detected
remote: -----> Generating environment
remote: Fetching...
remote: Unpacking...
remote: -----> Creating environment variables.
remote: -----> Buildpack installed.
remote: -----> Discovering process types
remote: Procfile declares types -> monitor, receive
remote:
remote: -----> Compressing...
remote: ! Compiled slug size: 548.5MB is too large (max is 300MB).
remote: ! See: http://devcenter.heroku.com/articles/slug-size
remote: ! Push failed: slug archive could not be created
remote: ! Please try pushing again.
remote: ! If the problem persists, see http://help.heroku.com/ and provide Request ID 3123dc0c-3f9f-4da1-9223-16531769b6ae.
remote:
remote:
remote: Verifying deploy...
remote:
remote: ! Push rejected to arcane-hollows-8678.
remote:
我完全不知道我做错了什么。据我所知，我会让我的heroku应用程序上传opencv和我的应用程序，然后压缩它。但是我如何影响opencv的大小？