Move MinIO from minio.localhost to minio.fizzy.localhost, which makes it same-site with the app, so the CORS redirect succeeds. The service worker fetches Active Storage URLs with `mode: "cors"` so it can inspect response sizes for offline caching. Active Storage's redirect controller returns a 302 to the MinIO presigned URL. When that redirect crosses site boundaries (from fizzy.localhost to minio.localhost), the browser sets the Origin header to "null" on the redirected request per the Fetch spec, which fails the CORS check and produces net::ERR_FAILED.
Fizzy
This is the source code of Fizzy, the Kanban tracking tool for issues and ideas by 37signals.
Running your own Fizzy instance
If you want to run your own Fizzy instance, but don't need to change its code, you can use our pre-built Docker image. You'll need access to a server on which you can run Docker, and you'll need to configure some options to customize your installation.
You can find the details of how to do a Docker-based deployment in our Docker deployment guide.
If you want more flexibility to customize your Fizzy installation by changing its code, and deploy those changes to your server, then we recommend you deploy Fizzy with Kamal. You can find a complete walkthrough of doing that in our Kamal deployment guide.
Development
You are welcome -- and encouraged -- to modify Fizzy to your liking. Please see our Development guide for how to get Fizzy set up for local development.
Contributing
We welcome contributions! Please read our style guide before submitting code.
License
Fizzy is released under the O'Saasy License.