Add get_version endpoint to identify REST API current version #160

	name: CI

	on: [push]

	jobs:
	test:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.10"

	- name: Install tox
	run: pip install tox

	- name: Cache tox environments
	id: cache-tox
	uses: actions/cache@v3
	with:
	path: .tox
	# requirements/*.txt, pyproject.toml, and .pre-commit-config.yaml
	# have versioning info that would impact the tox environment.
	key: tox-${{ hashFiles('requirements/*.txt') }}-${{ hashFiles('pyproject.toml') }}-${{ hashFiles('.pre-commit-config.yaml') }}

	- name: Run tox
	run: tox -e lint,py,coverage-report,typing # run tox using Python in path

	build:
	runs-on: ubuntu-latest
	needs: [test]

	steps:
	- uses: actions/checkout@v3

	- name: Define the Docker tag
	id: vars
	run: echo ::set-output name=tag::$(echo ${GITHUB_REF} \| sed -E 's,refs/(heads\|tags)/,,' \| sed -E 's,/,-,g')

	- name: Print the tag
	id: print
	run: echo ${{steps.vars.outputs.tag}}

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Log in to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and push
	uses: docker/build-push-action@v5
	with:
	context: .
	push: true
	tags: \|
	ghcr.io/lsst-ts/narrativelog:${{ steps.vars.outputs.tag }}
	cache-from: type=gha
	cache-to: type=gha,mode=max
	platforms: linux/amd64

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