Cannot connect to Infura inside a docker container: Cannot find module 'websocket'

Question

When I put my script in a docker container, I can no longer connect to Infura:

Error: Cannot find module 'websocket'

in package.json

"web3": "^1.0.0-beta.34"

in my script:

const Web3 = require('web3');
const web3 = new Web3(new Web3.providers.WebsocketProvider('wss://ropsten.infura.io/ws'));

myContract.events.Transfer({    // Transfer, allEvents, getPastEvents
    fromBlock: 0
}, function (error, event) {
    if (error) {
        console.log("error: " + error);
    } else {
        // console.log("event: " + JSON.stringify(event, null, 2));
        console.log("event: " + event);
    }
})

My Dockerfile is pretty standard.

Any idea of what my problem is ?

Answer 1

It seems inside a docker container, nodejs has problem getting the websocket from github. So I just add the websocket library directly in my app:

npm install --save websocket