Merge branch 'maint-1.1'
- maint-1.1: docker: initial release
- NOTE During merge, amended Dockerfile instructions to use CentOS-6 with Python-2.6 and MySQL-5.1, fitting our minimal requirements for Invenio-1.2 release series.
- NOTE Several tests are known to fail when run via Docker; this will be amended in subsequent commits.
Signed-off-by: Tibor Simko <tibor.simko@cern.ch>