Added UC2.1 to provide NFRs containing our requirements to a virtual machine.
Added DockerFile type.
Merge remote-tracking branch 'yegor256/master' into 109

Conflicts:
	src/main/requs/main.req
Resolved some merge conflicts and made other minor changes
Resolved some merge conflicts
Found another merge conflict (two UCs had the same number) and resolved it
Merge pull request #194 from antonxt/109

#194: pull request Added UC2.1 to provide NFRs containing our requirements to a virtual machine