This is an example of using boost-rollups to deploy a new OP Stack blockchain with some basic add-ons, including a Blockscout instance.
You should be able to deploy this Helmfile as-is, but there are a few things you may want to customize. The best place to start is the OP Stack: Getting Started docs. After a quick pass, you should be ready to fill in the missing values in the Helmfiles.
The genesis.json file needs to be uploaded somewhere that can be accessed over HTTP. The op-geth deployment will attempt to download the genesis file during the first run. You can use the genesis.json file in this repository as a starting point.
You also need to add the rollup.json file. It will be attached as a ConfigMap. You can either go through the OP Stack tutorial to generate this file or use the rollup.json file in this repository as a starting point.