Please install shasum and try again. In Docker trying to upgrade

I just tried again. But I do not know if it worked. Returned this:
root @ 131bbfc53029: / dgraph # curl https: //nightly.dgraph.io1 -sSf | bash
curl: (6) Could not resolve host: nightly.dgraph.io1

[edit]
Sorry, my mistake.
The address was wrong!

The PasterBin link has my complete log. The end in the footer is today’s log.

[edit2] The container is dying - is stopping

Dgraph version   : v0.8.2-dev
Commit SHA-1     : 0ae3008d
Commit timestamp : 2017-09-27 16:25:35 +1000
Branch           : HEAD

2017/09/27 16:36:48 Providing dgraphzero address is mandatory.
github.com/dgraph-io/dgraph/x.AssertTruef
	/home/travis/gopath/src/github.com/dgraph-io/dgraph/x/error.go:67
github.com/dgraph-io/dgraph/worker.StartRaftNodes
	/home/travis/gopath/src/github.com/dgraph-io/dgraph/worker/groups.go:103
runtime.goexit
	/home/travis/.gimme/versions/go1.9.linux.amd64/src/runtime/asm_amd64.s:2337