I have a website hosted in /var/www/mydomain

I want to create a chrooted ssh account to give access to a shell to my developers to execute commands and check logs.

This is just a raw transcript how I did it with jailkit :

$ apt-get install build-essential autoconf automake libtool flex bison debhelper binutils-gold

$ cd /usr/local/src/
$ wget http://olivier.sessink.nl/jailkit/jailkit-2.17.tar.bz2
$ tar -xjvf jailkit-2.17.tar.bz2
$ cd jailkit-2.17/
$ ./debian/rules binary
$ dpkg -i jailkit_2.17-1_amd64.deb
$ jk_init -j /var/www/mydomain jk_lsh
$ jk_init -j /var/www/mydomain sftp
$ jk_init -j /var/www/mydomain scp
$ jk_init -j /var/www/mydomain git
$ jk_init -j /var/www/mydomain extendedshell
$ jk_init -j /var/www/mydomain editors
$ jk_jailuser myuser