GitLab

With gcc 10, the default switched to -fno-common. This breaks memcached. We
need to explicilty pass -fcommon in the CFLAGS.

This is the newest LTS kernel release. Will also come in handy for
disaggregated memory stuff later.

These are no longer included in base image.

Remove the ubuntu1804 image. Base only has basic tools, no build tools
or libraries. Install build deps in nopaxos, mtcp, and tas images.

This speeds up base image build significantly

Just run different scripts inside. This avodis lots of duplication in
the jsons.

This is a lot faster than manually installing from ISO.

A base ubuntu image and two derived images for nopaxos and mtcp