Publish aggregator images using CI

[voltrevo]

What is this PR doing?

• Adds functionality to build.ts for pushing docker images to dockerhub
• Adds a github action for doing this when main is updated

How can these changes be manually tested?

1. Run the github action and make sure the container is pushed to dockerhub
2. Test the container by running ./manualTests/mint1ViaAggregator.ts against it

Does this PR resolve or contribute to any issues?

Resolves #91.

Checklist

• I have manually tested these changes
• Post a link to the PR in the group chat

Guidelines

• If your PR is not ready, mark it as a draft
• The resolve conversation button is for reviewers, not authors
  • (But add a 'done' comment or similar)

[jacque006]

Would be nice to move in the future to https://github.com/docker/build-push-action so we don't need to maintain a separate docker build script and can take advantage of features such as caching, platforms such as ARM, and others

[jacque006]

There's little cost to pushing up every commit. This also will make it easier to share agg images early when testing bug fixes with external devs, and will make it easier to test the image in the future to ensure it is working.

Suggested change

	branches:
	- 'main'
	paths:
	- 'aggregator/**'
	- '.github/workflows/aggregator-dockerhub.yml'
	defaults:
	run:
	working-directory: ./aggregator
	env:
	DENO_VERSION: 1.x
	jobs:
	push:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: denoland/setup-deno@v1
	with:
	deno-version: ${{ env.DENO_VERSION }}
	- run: git show HEAD
	- run: echo ${{ secrets.DOCKERHUB_TOKEN }} | docker login --username blswalletghactions --password-stdin
	- run: ./programs/build.ts --image-name blswallet/aggregator --image-only --also-tag-latest --push
	paths:
	- 'aggregator/**'
	- '.github/workflows/aggregator-dockerhub.yml'
	defaults:
	run:
	working-directory: ./aggregator
	env:
	DENO_VERSION: 1.x
	jobs:
	push:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: denoland/setup-deno@v1
	with:
	deno-version: ${{ env.DENO_VERSION }}
	- run: git show HEAD
	- run: echo ${{ secrets.DOCKERHUB_TOKEN }} | docker login --username blswalletghactions --password-stdin
	- run: ./programs/build.ts --image-name blswallet/aggregator --image-only --push

[jacque006]

You can then tag in another step on main or git tag/GH release

  push-latest
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    needs: [push]

    steps:
    - run: docker tag IMAGE blswallet/aggregator:latest # or version
    - run: docker push blswallet/aggregator:latest