You need to make changes to your yaml file and mention the version.
Replace
image: hyperledger/fabric-orderer
with
image: hyperledger/fabric-orderer:x86_64-1.0.0
And you can not directly run the
./network_setup.sh
 Command.
To proper execute it, run the following commands:
sudo rm -Rf $GOPATH/src/github.com/hyperledger 
mkdir -pv $GOPATH/src/github.com/hyperledger 
cd $GOPATH/src/github.com/hyperledger 
git clone http://gerrit.hyperledger.org/r/fabric 
git clone https://github.com/hyperledger/fabric-ca
cd $GOPATH/src/github.com/hyperledger/fabric 
git branch --all 
git fetch
make clean
make dist-clean
make configtxgen
make docker
make peer-docker
make orderer-docker
make couchdb
cd $GOPATH/src/github.com/hyperledger/fabric-ca
git branch --all
git fetch 
make clean
make dist-clean
make docker