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Install & Configure Docker

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Key folder structure

Livepeer will require files to be placed on the host and within the docker container. Here is a list of the key folders used by the docker install.

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Host Folders

By default, docker will store all volumes in the /var/lib/docker/volumes directory This installation will create a volume called: gateway-lpData and it will be located at /var/lib/docker/volumes/gateway-lpData/_data

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Container Folders

Within the docker container, the volume gateway-lpData will be mounted at /root/.lpData

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Install Prerequisites

If docker is already installed, you can skip this step. The installation assumes you are running Docker 20.10.x. If an older version of docker is installed remove it with the following command: As the root user (or sudo), run the following: 
apt remove docker*
Install Docker 
curl https://releases.rancher.com/install-docker/20.10.sh | sh
Create a Docker volume 
docker volume create gateway-lpData
Create Docker Compose file from the root user’s home directory /root/ 
nano docker-compose.yml
Copy and paste the following and save the following 
version: '3.9'

services:
   gateway:
    image: livepeer/go-livepeer:<RELEASE_VERSION>
    container_name: "gateway"
    hostname: "gateway"
    ports:
      - 1935:1935
      - 8935:8935
    volumes:
      - gateway-lpData:/root/.lpData
    command: '-ethUrl=https://arb1.arbitrum.io/rpc/
              -ethKeystorePath=/root/.lpData
              -network=arbitrum-one-mainnet
              -cliAddr=gateway:5935
              -broadcaster=true
              -monitor=true
              -v=99
              -blockPollingInterval=20
              -maxPricePerUnit=300
              -pixelsPerUnit=1
              -rtmpAddr=0.0.0.0:1935
              -httpAddr=0.0.0.0:8935
              '
volumes:
  gateway-lpData:
    external: true

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Create Livepeer Gateway ETH account

In this step we need to start the Gateway in order to create an Ethereum account. 
docker compose run -it gateway
When prompted for the ETH password, enter a strong password to secure your Ethereum account. This password is used to decrypt and access the ETH private key.
Make sure to never share or lose access to either the password or the keystore file.
Keep this password handy, we will use it in the following steps.
After you see the message that the Ethereum account has been unlocked, CTRL+C to exit the Livepeer docker instance. Using the previously created ETH password, create the eth-secret file 
nano -p /var/lib/docker/volumes/gateway-lpData/_data/eth-secret.txt

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Modify Docker compose file to include eth-secret.txt

nano docker-compose.yml
Add the following line below the -ethKeystorePath and save 
-ethPassword=/root/.lpData/eth-secret.txt
Here is the full modified version of the docker-compose.yml file 
version: '3.9'

services:
  gateway:
    image: livepeer/go-livepeer:<RELEASE_VERSION>
    container_name: "gateway"
    hostname: "gateway"
    ports:
      - 1935:1935
      - 8935:8935
    volumes:
      - gateway-lpData:/root/.lpData
    command: '-ethUrl=<YOUR ARB APC>
              -ethKeystorePath=/root/.lpData
              -ethPassword=/root/.lpData/eth-secret.txt
              -network=arbitrum-one-mainnet
              -cliAddr=gateway:5935
              -broadcaster=true
              -monitor=true
              -v=99
              -blockPollingInterval=20
              -maxPricePerUnit=300
              -pixelsPerUnit=1
              -rtmpAddr=0.0.0.0:1935
              -httpAddr=0.0.0.0:8935
              '
volumes:
  gateway-lpData:
    external: true
Start Livepeer in the background 
docker compose up -d
Launch the livepeer_cli 
docker exec -it gateway /bin/bash
livepeer_cli -host gateway -http 5935
Jump to Configure Transcoding Options to finish configuring the Gateway
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