1) Create a model file

Pick a protocol token/system coin price and paste the following code into surplus_model.sh:

#!/usr/bin/env bash
while true; do
  echo "{\"price\": \"325.0\"}"
  sleep 120                   
done

Then:

chmod +x surplus_model.sh

For more information about bidding models, see this.

2) Create the keeper run file

Create a file called run_auction_keeper.sh and paste the following code in it:

#!/bin/bash
​
docker run -it \
  -v <KEYSTORE_DIR>:/keystore \
  -v <MODEL_DIR>:/models \
    reflexer/auction-keeper:latest \
        --type surplus \
        --model /models/surplus_model.sh \
        --rpc-uri <ETH_RPC_URL> \
        --eth-from <KEEPER_ADDRESS> \
        --eth-key key_file=/keystore/<KEYSTORE_FILE>

Then, substitute the following variables:

KEYSTORE_DIR - the local directory where your keystore file is

MODEL_DIR - the local directory where your surplus_model.sh file is

KEYSTORE_FILE - your Ethereum UTC JSON keystore filename

For more information about this keystore format and how to generate them:

• ​Ethereum UTC / JSON Wallet Encryption​

• ​keythereum​

ETH_RPC_URL - the URL of your ethereum RPC connection

KEEPER_ADDRESS - the keeper's address. It should be in checksummed format (not lowercase)

Then:

chmod +x run_auction_keeper.sh

4) Start the keeper and enter your keystore file password

./run_auction_keeper.sh

$ ./run_auction_keeper.sh
latest: Pulling from reflexer/auction-keeper
Digest: sha256:7e55ec9b0a136fc903d9f7f2690538bcbde9029d957e0e6f84d0282790f9666a
Status: Downloaded newer image for reflexer/auction-keeper:latest
docker.io/reflexer/auction-keeper:latest
Password for /keystore/key.json: