functional shiny app (#2) #5

	name: Build & Deploy
	on:
	workflow_dispatch:
	push:
	paths:
	- comets_shinyapp_example/**
	branches:
	- master
	pull_request:
	paths:
	- comets_shinyapp_example/**
	branches:
	- master

	jobs:
	build:
	permissions:
	pages: write
	id-token: write
	contents: read
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: comets_shinyapp_example
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Login to Docker
	uses: docker/login-action@v3
	if: github.event_name != 'pull_request'
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

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

	- name: Cache Docker layers
	uses: actions/cache@v4
	with:
	path: /tmp/.buildx-cache
	key: ${{ runner.os }}-buildx-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-buildx-

	- name: Extract Docker metadata
	id: meta
	uses: docker/metadata-action@v5
	with:
	images: hicsail/comets_shinyapp
	tags: \|
	type=ref,event=branch
	type=semver,pattern={{version}}
	type=semver,pattern={{major}}.{{minor}}

	- name: Build and push Docker image
	id: build-and-push
	uses: docker/build-push-action@v6
	with:
	context: ./comets_shinyapp_example
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}
	cache-from: type=gha
	cache-to: type=gha,mode=max

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