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Step 2: Build an enclave image with the node.js binary

Step 2.1: Create a config file​

Create a config.json file with the following content:

{
    "caddy": {
        "url": "",
        "caddyfile": ""
    },
    "params": {
    },
    "service_commands": [
        {
            "name": "node_app",
            "command": "/app/mount/app", 
            "build_commands": [
                ""
            ],
            "ports": [4000],
            "env": {}
        }
    ]
}

The second app in /app/mount/app refers to the package created in Step 1.

Step 2.2: Build the enclave image​

Build the enclave image using

sudo docker run -it --privileged -v `pwd`:/app/mount marlinorg/enclave-builder

The command will create enclave/enclave.eif which is the enclave image file and will print measurements which should look something like

{
  "Measurements": {
    "HashAlgorithm": "Sha384 { ... }",
    "PCR0": "cfa7554f87ba13620037695d62a381a2d876b74c2e1b435584fe5c02c53393ac1c5cd5a8b6f92e866f9a65af751e0462",
    "PCR1": "bcdf05fefccaa8e55bf2c8d6dee9e79bbff31e34bf28a99aa19e6b29c37ee80b214a414b7607236edf26fcb78654e63f",
    "PCR2": "20caae8a6a69d9b1aecdf01a0b9c5f3eafd1f06cb51892bf47cef476935bfe77b5b75714b68a69146d650683a217c5b3"
  }
}
tip

If you aren't able to access the created enclave/enclave.eif file, you may need to change its owner from root to user(you).