Port R and Python fixes from research template "improve devcontainers" branch #33

	---
	name: CI

	env:
	IMAGE_NAME: research-template
	PUBLIC_IMAGE_NAME: ghcr.io/opensafely/research-template
	REGISTRY: ghcr.io

	on:
	workflow_dispatch:
	pull_request:
	push:
	branches: [main]

	jobs:
	build-and-test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: hadolint/hadolint-action@54c9adbab1582c2ef04b2016b760714a4bfde3cf # v3.1.0
	# Lint the dockerfile before building
	with:
	failure-threshold: error
	- uses: "opensafely-core/setup-action@v1"
	with:
	install-just: true

	- name: Build docker image
	run: just build

	- name: Test docker image
	run: just smoke-test

	- name: Save docker image
	run: \|
	docker save research-template \| gzip > /tmp/research-template.tar.gz

	- name: Upload docker image
	uses: actions/upload-artifact@v4
	with:
	name: research-template-image
	path: /tmp/research-template.tar.gz

	publish:
	needs: [build-and-test]

	runs-on: ubuntu-22.04

	permissions:
	contents: read
	packages: write

	if: github.ref == 'refs/heads/main'

	steps:
	- uses: actions/checkout@v4
	- uses: "opensafely-core/setup-action@v1"
	with:
	install-just: true

	- name: Download docker image
	uses: actions/download-artifact@v4
	with:
	name: research-template-image
	path: /tmp/image

	- name: Import docker image
	run: gunzip -c /tmp/image/research-template.tar.gz \| docker load

	- name: Publish image
	run: \|
	echo ${{ secrets.GITHUB_TOKEN }} \| docker login $REGISTRY -u ${{ github.actor }} --password-stdin
	docker tag $IMAGE_NAME $PUBLIC_IMAGE_NAME:latest
	docker push $PUBLIC_IMAGE_NAME:latest

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