Taking Internet offline too early

[maverickwoo]

This step

fluffi/getting_started.md

Line 121 in a259d74

Now switch your environment form Internet-connected to offline:

seems too soon because the next step

fluffi/getting_started.md

Lines 129 to 134 in a259d74

	Finally, build all server services:
	```
	cd /srv/fluffi
	docker-compose build
	```

still requires a working Internet connection in our deployment experience.