feat(init): use dinit instead of supervisor

[theborakompanioni]

Resolves #62.

Before this PR, there was a short delay (5s) when starting jmwalletd to wait for tor port bindings, as the previous service manager (supervisord) has no concept of dependencies. This is brittle and error-prone.

After this PR is applied, supervisord has been replaced by dinit which can build service hierarchies and making it possible for jmwalletd and ob-watcher to actively wait for tor to start successfully.

Also updates docker image versions:

• build image: alpine from 3.15 to 3.16.2
• runtime image debian from bullseye-20220801-slim to bullseye-20221004-slim

How to test?

Use the image published from this branch called dinit in your regtest environment by changing label master to dinit in dockerfile-deps/joinmarket/webui-standalone/Dockerfile and rebuild your setup with npm run regtest:build.
You should see instance 2 and 3 come up normally and access their UI on http://localhost:29080 and http://localhost:30080.
In the console you see smth like:

jm_regtest_joinmarket2          | [  OK  ] nginx
jm_regtest_joinmarket2          | [  OK  ] tor
jm_regtest_joinmarket2          | [  OK  ] jmwalletd
jm_regtest_joinmarket2          | [  OK  ] ob-watcher
jm_regtest_joinmarket2          | [  OK  ] boot

[dergigi]

Good stuff! I'll do my best to test this properly today.

[theborakompanioni]

Good stuff! I'll do my best to test this properly today.

Thanks.
Please note that one feature got lost when switching to dinit: automatic log rotation.
Should this be reimplemented within this PR, or should a follow-up PR be created?

[dergigi]

I'm usually in favor of doing separate, smaller PRs, but I don't have a strong preference here. You decide! 😁

[dergigi]

Nice! Code looks good to me, and I tested it successfully.

I didn't know about dinit. Looks solid enough, even though it is not super-widely used yet and still alpha (according to their releases). The service hierarchy is indeed very neat, though.

I don't think anything speaks against resolving the "wait for other service to start" issue in this way.

tACK ✅

[theborakompanioni]

Nice! Code looks good to me, and I tested it successfully.

💪

I didn't know about dinit. Looks solid enough, even though it is not super-widely used yet and still alpha (according to their releases). The service hierarchy is indeed very neat, though.

Yes, let's see if it fits the purpose. I too found no issues so far during testing, but will closely follow ongoing development and updates. Currently, it seems like a solid choice.

I don't think anything speaks against resolving the "wait for other service to start" issue in this way.

👍

tACK white_check_mark

Will merge, but keep on testing an report back in case anything comes up.