- GitHub Actions Ubuntu: Case sensitive
- My local macOS PC: Case insensitive
The case-sensitivity between the GitHub Actions runner and your local environment is sometimes different

Bug: Couldn’t open SUMMARY.md · Issue #36 · peaceiris/actions-mdbook
mdBook can recognize SUMMARY.md but cannot summary.md on a GitHub Actions runner (Ubuntu VM).
On the other hand, both SUMMARY.md and summary.md are acceptable on my local macOS machine.
The case-sensitivity between the GitHub Actions runner and my local environment was different.
My local macOS machine has been formatted with case-insensitive mode, so the local building has passed and the remote building failed.
No.
MacOSX images with case sensitive APFS filesystem · Issue #865 · actions/virtual-environments
We can’t offer another image at this time since it would affect overall capacity of Mac and be costly to maintain.
Keyboard Shortcuts
| Command | Function | 
|---|---|
| ? (Shift+/) | Bring up this help modal | 
| g+h | Go to Home | 
| g+p | Go to Posts | 
| g+e | Open Editor page on GitHub in a new tab | 
| g+s | Open Source page on GitHub in a new tab | 
| r | Reload page |