Builder for ccfe

• Dockerfile.initial used to create buildtool with all the required initial components, in effect the builder for: registry.deploy.opusvl.net/public/debian-stable-buildtool:20210111-step1
• Dockerfile.build used to build gcc, libtool and others to create an enviroment capable of building ncurses correctly, creates: registry.deploy.opusvl.net/public/debian-stable-buildtool:20210111-step2