Build and release container image #12

	name: "Build and release container image"

	on:
	push:
	branches:
	- "main"
	release:
	types:
	- "published"


	# Default to bash in login mode for all steps; key to activating conda
	# environment!
	# https://github.com/mamba-org/provision-with-micromamba#IMPORTANT
	defaults:
	run:
	shell: "bash -l {0}"



	jobs:

	build-and-release-image:
	name: "Build and release container image"
	runs-on: "ubuntu-latest"
	env:
	IMAGE_NAME: "nsidc/usaon-vta-survey"
	# GitHub Actions expressions don't have great conditional support, so
	# writing a ternary expression looks a lot like bash. In Python, this
	# would read as:
	# github.event.release.tag_name if github.event_name == 'release' else 'latest'
	# https://docs.github.com/en/actions/learn-github-actions/expressions
	IMAGE_TAG: "${{ github.event_name == 'release' && github.event.release.tag_name \|\| 'latest' }}"
	steps:
	- name: "Check out repository"
	uses: "actions/checkout@v3"

	- name: "Build container image"
	run: \|
	docker build -t "${IMAGE_NAME}:${IMAGE_TAG}" .

	- name: "DockerHub login"
	uses: "docker/login-action@v2"
	with:
	username: "${{secrets.DOCKER_USER}}"
	password: "${{secrets.DOCKER_PASS}}"

	- name: "GHCR login"
	uses: "docker/login-action@v2"
	with:
	registry: "ghcr.io"
	username: "${{ github.repository_owner }}"
	password: "${{ secrets.GITHUB_TOKEN }}"

	- name: "Push to DockerHub and GHCR"
	run: \|
	docker push "${IMAGE_NAME}:${IMAGE_TAG}"

	docker tag "${IMAGE_NAME}:${IMAGE_TAG}" "ghcr.io/${IMAGE_NAME}:${IMAGE_TAG}"
	docker push "ghcr.io/${IMAGE_NAME}:${IMAGE_TAG}"

Provide feedback