Firefox Nightly gets a new version every day and as a consequence, the release notes for the Nightly channel are updated continuously to reflect features that have reached sufficient maturity to benefit from community feedback and bug reports. Features listed here may or may not make a final release of Firefox.
apt-get -y install devscripts dpkg-dev
git clone https://github.com/Vitexus/FirefoxNightlyDeb.git
debuild -i -us -uc -b
Download from https://repo.vitexsoftware.cz/ or Build package. Then install:
gdebi nightly_71.0a1_all.deb
Or you can use repo:
echo "deb http://repo.vitexsoftware.cz $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/vitexsoftware.list
sudo wget -O /etc/apt/trusted.gpg.d/vitexsoftware.gpg http://repo.vitexsoftware.cz/keyring.gpg
sudo apt update
sudo apt install nightly
vagrant up
vagrant ssh
sudo apt install xfce4
startxfce4
See also: https://github.com/Vitexus/ThunderbirdDailyDeb https://github.com/VitexSoftware/FirefoxDevelEditionDeb