contracts: Allow to specify deployment keyper set index via env var

The keyperset index from the deployment json file can now be given via
the `KEYPER_SET_INDEX` env variable.

Author: ulope

contracts/hardhat.config.js

@@ -87,7 +87,10 @@ extendEnvironment((hre) => {
     };
   }
 
-  hre.getKeyperAddresses = async function (index = 0) {
+  hre.getKeyperAddresses = async function (index = -1) {
+    if (index === -1) {
+      index = parseInt(process.env.KEYPER_SET_INDEX ?? 0, 10);
+    }
     const keypers = hre.deployConf.keypers?.at(index);
     if (keypers === undefined) {
       const { keyper0, keyper1, keyper2 } = await hre.getNamedAccounts();

docker/docker-compose.yml

@@ -51,6 +51,7 @@ services:
       - ./config:/config
     environment:
       DEPLOY_CONF: /config/node-deploy.json
+      KEYPER_SET_INDEX: 0
     depends_on:
       geth:
         condition: service_healthy