This is the default Docker Enginer configuration JSON. I once needed to revert and had a difficult time locating this without resetting my whole installation.

{
  "builder": {
    "gc": {
      "defaultKeepStorage": "20GB",
      "enabled": true
    }
  },
  "features": {
    "buildkit": true
  },
  "experimental": false
}

Install Docker for Mac

Follow instructions on the install page.

Install Docker for Windows

Follow instructions on the Windows install page.