Use core 4.4.0rc3, use uv in entrypoint, add CI workflows, misc fixes #3

	name: Test migrations

	on:
	push:
	branches: [master]
	workflow_call:
	pull_request:

	env:
	UV_FROZEN: true # Do not update the lockfile

	jobs:
	test_migrations:
	name: Test migrations
	runs-on: ubuntu-latest
	container: ghcr.io/astral-sh/uv:python3.13-bookworm-slim
	env:
	DATABASE_URI: postgresql://nwa:nwa@postgres/orchestrator-core
	services:
	postgres:
	image: postgres:17-alpine
	env:
	POSTGRES_PASSWORD: nwa
	POSTGRES_USER: nwa
	POSTGRES_DB: orchestrator-core
	# Set health checks to wait until postgres has started
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	steps:
	- name: Check out repository code
	uses: actions/checkout@v3

	- name: Install dependencies
	run: uv sync

	- name: Test migrations
	run: uv run main.py db upgrade heads

	- name: Verify 2 migration heads
	run: \|
	num_heads=$(python main.py db heads \| grep -c '(head)')
	if [ "$num_heads" -ne 2 ];
	echo "Found $num_heads DB heads instead of 2"
	exit 1
	fi

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