Add ffmpeg to koel

src/freedombone-app-koel

 
     apt-get -yq install php-gettext php-curl php-gd php-mysql git curl php-zip
     apt-get -yq install php-memcached php-intl exiftool libfcgi0ldbl
+    apt-get -yq install ffmpeg
 
     if [ ! -d /var/www/$KOEL_DOMAIN_NAME ]; then
         mkdir /var/www/$KOEL_DOMAIN_NAME
     sed -i "s|DB_PASSWORD=.*|DB_PASSWORD=$MARIADB_PASSWORD|g" .env
     sed -i 's/MAIL_HOST=.*/MAIL_HOST=localhost/g' .env
     sed -i 's/MAIL_PORT=.*/MAIL_PORT=25/g' .env
+    sed -i 's|FFMPEG_PATH=.*|FFMPEG_PATH=/usr/bin/ffmpeg|g' .env
 
     php artisan koel:init
     if [ ! "$?" = "0" ]; then