Docker container to build and test Grilo
Main purpose is to build a container that can be used by Travis CI to build,
test and install Grilo, both the core and the plugins.
We will provide three different versions:
grilofw/grilo:base: this is a base image that has all the dependencies
required to build Grilo. It will be used by Travis CI to
grilofw/grilo:core: this image contains Grilo, but no plugin. It is
automatically created and updated by Travis CI on each Grilo
commit. And it is used as a base image to build and test Grilo.
grilofw/grilo:latest: this image contains full Grilo, including all
available plugins. It is automatically created and updated by Travis CI on
each Grilo plugin commit.