https://medium.com/@tomat/dynamic-git-branch-subdomains-with-laravel-envoyer-and-apache-f963691e1dc5

after_activate.sh

cd {{project}}

# Remove dots from branch name (one may want to do more cleaning here)
branch=$(echo "{{branch}}"|sed "s/\.//g")

if [ "$branch" != "master" ]; then
    # Replace the current symlink with the one we saved before
    mv -T current_archived current

    # Make sure the branches directory exists
    mkdir -p "branches"

    # Remove previous deployment of this specific branch
    rm -rf "branches/$branch"
    
    # Move this release to the branch directory
    mv "{{release}}" "branches/$branch"

    # (optional) Warm up cache again because the path changed
    cd "branches/$branch"
    php app/console ca:cl --env=prod
fi

# Reload php-fpm manually instead of letting Envoyer do it
sudo service php-fpm reload