hyperledger fabric: "peer" not recognized during channel creation & joining - first network - hyperledger-fabric

Question

I have been roughly following http://hyperledger-fabric.readthedocs.io/en/latest/build_network.html#troubleshoot to create my first network.
For simplicity, I had made a separate folder, mn inside first-network, and had started with only crypto-config.yaml, cryptogen, configtx.yaml, configtxgen, docker-compose-cli.yaml and base folder in mn folder, to observe what is created when, also to eliminate bin path confusion.
I have executed the following commands in the same sequence:
./cryptogen generate --config=./crypto-config.yaml
./configtxgen -profile TwoOrgsOrdererGenesis -outputBlock ./channel-artifacts/genesis.block
./configtxgen -profile TwoOrgsChannel -outputCreateChannelTx ./channel-artifacts/channel.tx -channelID testhimani
./configtxgen -profile TwoOrgsChannel -outputAnchorPeersUpdate ./channel-artifacts/Org1MSPanchors.tx -channelID testhimani -asOrg Org1MSP
./configtxgen -profile TwoOrgsChannel -outputAnchorPeersUpdate ./channel-artifacts/Org2MSPanchors.tx -channelID testhimani -asOrg Org2MSP
docker exec -it cli bash
After executing the last command, I had to open a new terminal window, as I couldn't get the command input "$".
On the new terminal, on executing the channel creation and joining command, I received the error that "peer" command is not found.
himani#himani-HP-Notebook:~/fabric-samples/first-network/mn$ peer channel create -o orderer.example.com:7050 -c testhimani -f ./channel-artifacts/channel.tx --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
No command 'peer' found, did you mean:
Command 'pee' from package 'moreutils' (universe)
Command 'pear' from package 'php-pear' (main)
Command 'peet' from package 'pipexec' (universe)
Command 'beer' from package 'gerstensaft' (universe)
peer: command not found
UPDATE
The error after executing the command in the same terminal after # instead on a new terminal, is the following:
himani#himani-HP-Notebook:~/fabric-samples/first-network/pg$ docker exec -it cli bash
root#0404332355e0:/opt/gopath/src/github.com/hyperledger/fabric/peer# peer channel create -o orderer.example.com:7050 -c testhimani -f ./channel-artifacts/channel.tx --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
Error: failed to create deliver client: orderer client failed to connect to orderer.example.com:7050: failed to create new connection: context deadline exceeded
Usage:
peer channel create [flags]
Flags:
-c, --channelID string In case of a newChain command, the channel ID to create.
-f, --file string Configuration transaction file generated by a tool such as configtxgen for submitting to orderer
-t, --timeout int Channel creation timeout (default 5)
Global Flags:
--cafile string Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
--certfile string Path to file containing PEM-encoded X509 public key to use for mutual TLS communication with the orderer endpoint
--clientauth Use mutual TLS when communicating with the orderer endpoint
--keyfile string Path to file containing PEM-encoded private key to use for mutual TLS communication with the orderer endpoint
--logging-level string Default logging level and overrides, see core.yaml for full syntax
-o, --orderer string Ordering service endpoint
--ordererTLSHostnameOverride string The hostname override to use when validating the TLS connection to the orderer.
--tls Use TLS when communicating with the orderer endpoint
-v, --version Display current version of fabric peer server
UPDATE 2:
I feel orderer is missing in my docker ps. How can I take care of it?
himani#himani-HP-Notebook:~/fabric-samples/first-network/pg$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
0404332355e0 hyperledger/fabric-tools:latest "/bin/bash" 2 days ago Up 2 days cli
68075835c9f9 hyperledger/fabric-peer:latest "peer node start" 2 days ago Up 2 days 0.0.0.0:10051->7051/tcp, 0.0.0.0:10053->7053/tcp peer1.org2.example.com
8a76208f8411 hyperledger/fabric-peer:latest "peer node start" 2 days ago Up 2 days 0.0.0.0:8051->7051/tcp, 0.0.0.0:8053->7053/tcp peer1.org1.example.com
87a73761dfc7 hyperledger/fabric-peer:latest "peer node start" 2 days ago Up 2 days 0.0.0.0:7051->7051/tcp, 0.0.0.0:7053->7053/tcp peer0.org1.example.com
9ab8cbc25f99 hyperledger/fabric-peer:latest "peer node start" 2 days ago Up 2 days 0.0.0.0:9051->7051/tcp, 0.0.0.0:9053->7053/tcp peer0.org2.example.com

Answer 1

Once you execute
docker exec -it cli bash
you will get new tty of cli you are using. And you will bee prompted with # instead of $ in the same terminal.
If you open a new terminal window, it still be your system cli.
As per your screenshot, you are on the right path. And that is where you have to execute the next command.