Try replacing Travis with Github Actions #4

	name: Exam

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest

	services:
	postgres:
	image: postgres

	steps:
	- uses: actions/checkout@v4
	- name: Set up JDK 21
	uses: actions/setup-java@v2
	with:
	java-version: 1.21
	distribution: temurin
	- uses: actions/checkout@v4
	- name: Set up Node 18
	uses: actions/setup-node@v4
	with:
	node-version: 18.x
	- name: Create database user
	run: psql -c "CREATE USER sitnet WITH PASSWORD 'sitnetsitnet';" -U postgres
	- name: Create database
	run: psql -c 'CREATE DATABASE sitnet_test WITH OWNER 'sitnet';' -U postgres
	- name: Move to UI directory
	run: cd ui
	- name: Clean node_modules
	run: rm -rf node_modules
	- name: Install dependencies
	run: npm i
	- name: Check format
	run: npm run check-format
	- name: Lint
	run: npm run check-lint
	- name: Build production bundle
	run: npm run build
	- name: Move back to root
	run: cd ..
	- name: Run tests
	run: sbt test

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