Merge pull request #3 from jonmorehouse/master

Add ability to create a database on run via `-e DB` flag
Changed base image and added postgresql-contrib package

- Changed base image to phusion/baseimage (https://github.com/phusion/baseimage-docker)
- Added postgresql-contrib-9.3 to enable extensions such as hstore and uuid
Merge pull request #5 from pengux/master

Changed base image and added postgresql-contrib package
For issue #9. @paoloantinori reports that it is not enough to wait for the pid.  Thanks to @waterlink for the solution.
Added UTF8 as the encoding when creating the new database
Set DEBIAN_FRONTEND=noninteractive environment variable and removed it from all RUN statements
Get and install the Postgresql keys for apt
Drop and recreate a new pg cluster with the UTF8 encoding
Removed the DEBIAN_FRONTEND=noninteractive environment variable and added it to the individual apt-get commands so as not to pollute the image's environment.
Merge pull request #10 from mitulamin/master

Force UTF-8 encoding for databases
Allow comma-separated list of DBs to create
Update README.md

Change (depracated) `-link` to `--link`.
Update Dockerfile

Prevent creation of unnecessary Docker cache images (the ones that only echo something).
Merge pull request #11 from lightoze/master

Allow comma-separated list of DBs to create
Merge pull request #12 from mauvm/patch-1

Update README.md
Merge pull request #14 from mauvm/patch-2

Update Dockerfile
Fix syntax
Merge pull request #15 from parrish/broken_syntax

Fix syntax
added log directory as volume
Merge pull request #16 from zheli/master

added log directory as volume