fix: update fedimint version to v0.1 branch

[justinmoon]

Use v0.1.0-rc3 git tag for docker and nix fedimint deps.

I can complete the setup using docker, but sometimes need to refresh the last page to get to the dashboard. Not sure what is causing that.

Also, the docker setup doesn't mine any blocks (this is one of many nice things that devimint automates for us) and so it seems like after DKG completes the federation just keeps producing tons of rounds of consensus trying to get a first bitcoin block:

2023-08-29T21:04:30.602310Z  INFO consensus: Processing items from epoch
 2866
2023-08-29T21:04:30.901153Z  INFO consensus: 
- Epoch: 2867 [PeerId(0), PeerId(1), PeerId(2), PeerId(3)] -
  Peer 0: Module CI: module=2 ci=2-Wallet Block Count 0
  Peer 0: Outcome Signature
  Peer 1: Module CI: module=2 ci=2-Wallet Block Count 0
  Peer 1: Outcome Signature
  Peer 2: Module CI: module=2 ci=2-Wallet Block Count 0
  Peer 2: Outcome Signature
  Peer 3: Module CI: module=2 ci=2-Wallet Block Count 0
  Peer 3: Outcome Signature
2023-08-29T21:04:30.901826Z  INFO consensus: Processing items from epoch
 2867
2023-08-29T21:04:31.161015Z  INFO consensus: 
- Epoch: 2868 [PeerId(0), PeerId(1), PeerId(2)] -
  Peer 0: Module CI: module=2 ci=2-Wallet Block Count 0
  Peer 0: Outcome Signature
  Peer 1: Module CI: module=2 ci=2-Wallet Block Count 0
  Peer 1: Outcome Signature
  Peer 2: Module CI: module=2 ci=2-Wallet Block Count 0
  Peer 2: Outcome Signature

In general, I think that having multiple ways of running the backend will always lead to issues like this. Perhaps we should package devimint in a docker container for better dev experience?

[wbobeirne]

Don't forgot the image tags in docker-compose.yml