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