In Januar I wrote article how Install Redmine on Debian with Nginx.
Now, i wrote Debian package for easier installation.
Download & install
wget http://drive.ondrejsika.com/debian/all/nginx-redmine-2.3-sqlite.deb
dpkg -i nginx-redmine-2.3-sqlite.deb
Use repository
echo "deb http://drive.ondrejsika.com/debian all/" >> /etc/apt/source.list
apt-get update
apt-get install nginx-redmine-2.3-sqlite