added ens-sync-fastchain container entry

[samt1803]

main PR is streamr-dev/network-contracts#615

ticket for that is https://linear.app/streamr/issue/ETH-568/add-ens-stream-creation-support-to-fast-chain

[jtakalai]

should it have a health check? I wrote a quick attempt at something like that, though really it's kind of hard to know if it REALLY is healthy before there is traffic -___- see #617

[harbu]

Is this ETH-568?

We should add some kind of health check at least. Adding a few comments to what @jtakalai is working on in streamr-dev/network-contracts#617. Could we add that here? The file writing approach there is better than having no health check.

[samt1803]

Ah I didn't see that ticket. It is that, together with #615, that needs this to be merged to get green in CI and now #617

[jtakalai]

Could we add that here?

I think since it has its own PR, we could just leave it out from here. Let's get this one merged.

[harbu]

Having the health check here is kind of important if we want to re-enable the skipped tests in client related to this service (mainly https://github.com/streamr-dev/network/blob/streamr-1.0/packages/client/test/end-to-end/StreamRegistry.test.ts#L116). Unless we have another way to verify that the service is running before starting the test run?

[samt1803]

added healthcheck to container