curl http://repo.varnish-cache.org/debian/GPG-key.txt | apt-key add -
echo "deb http://repo.varnish-cache.org/debian/ $(lsb_release -s -c) varnish-3.0" >> /etc/apt/sources.list.d/varnish.list
apt-get update
apt-get install varnish```

# Activation de varnish et configuration du port 80 a la place du port 6081

```sh
sed -i "#START#s#no#yes#" /etc/default/varnish-
sed -i "s#-a :6081#-a :80#" /etc/default/varnish
sed -i "s#/etc/varnish/default.vcl#/etc/varnish/production.vcl#" /etc/default/varnish

backend default {
    .host = "127.0.0.1";
    .port = "8080";
}