The last commit changed the installation script a lot, but made some mistakes on the genration of config.
It gens the $_svn_ourroot_password_ to $_svn_certroot_password_. Just fix it.
According to the version from @vfleaking, the judger_socket password and the our-root password is 32 chars long. Strengthen it.
There is also a *** space char on the end of a line. Kick it out.
Change the base Docker image to ubuntu16.04 and change the LAMP
packages to support PHP7.
BREAKING CHANGE: the packages which will be installed has changed.
In order to support PHP7, change the way to operate database. PHP7
removed the mysql extension, so the old way to operate database is
not usable. This commit use a new way to operate database.
BREAKING CHANGE: the way to operate database has changed.