The new key is valid until 2026, and the updated instructions below are safer for your system.
    sudo apt-get update && sudo apt-get install curl apt-transport-https gnupg
    curl https://apt.hrfee.dev/hrfee.pubkey.gpg | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/apt.hrfee.dev.gpg
    # Stable (jfa-go/jfa-go-tray only)
    echo "deb https://apt.hrfee.dev trusty main" | sudo tee /etc/apt/sources.list.d/hrfee.list
    # ------
    # Unstable (jfa-go/jfa-go-tray, waybar-mpris)
    echo "deb https://apt.hrfee.dev trusty-unstable main" | sudo tee /etc/apt/sources.list.d/hrfee.list
    # ------
    sudo apt-get update
                        | File Name ↓ | File Size ↓ | Date ↓ | 
|---|---|---|
| Parent directory/ | - | - | 
| jfa-go-tray_0.3.8+git_amd64.deb | 11.3 MiB | 2024-Jul-26 16:52 | 
| jfa-go-tray_0.3.9+git_amd64.deb | 11.2 MiB | 2024-Jul-26 16:52 | 
| jfa-go-tray_0.5.0+git_amd64.deb | 18.7 MiB | 2024-Jul-26 16:52 | 
| jfa-go-tray_0.5.1+git_amd64.deb | 18.8 MiB | 2024-Jul-26 16:52 | 
| jfa-go-tray_093937ec+git_amd64.deb | 8.3 MiB | 2024-Jul-26 16:52 |