build on merge #14

	# A github action that builds a container image for the project.

	name: Build Container

	on:
	pull_request:

	branches: [main]

	paths:
	# This is the entire list of files that will trigger the workflow.
	- Dockerfile
	- pyproject.toml
	- requirements-gpu.txt
	- .github/workflows/build-container.yaml

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Login to Docker Hub
	uses: docker/login-action@v3
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Set tag name (thanks ChatGPT).
	id: set_tag
	run: \|
	branch_name="${{ github.head_ref }}"
	if [[ "${{ github.ref }}" == "refs/heads/main" ]]; then
	echo "tag=latest" >> $GITHUB_OUTPUT
	elif [[ "${{ github.event_name }}" == "pull_request" ]]; then
	sanitized_branch_name="${branch_name//\//-}"
	echo "tag=${sanitized_branch_name}" >> $GITHUB_OUTPUT
	else
	sanitized_branch_name="${GITHUB_REF#refs/heads/}"
	sanitized_branch_name="${sanitized_branch_name//\//-}"
	echo "tag=${sanitized_branch_name}" >> $GITHUB_OUTPUT
	fi
	- name: Build and push
	uses: docker/build-push-action@v5
	with:
	push: true
	# This is the name of the image that will be pushed to Docker Hub. If the branch is main, the image will be tagged as latest. Else, it will be tagged as the branch name.
	tags: ${{ secrets.DOCKERHUB_USERNAME }}/taxpose:${{ steps.set_tag.outputs.tag }}
	cache-from: type=registry,ref=${{ secrets.DOCKERHUB_USERNAME }}/taxpose:${{ steps.set_tag.outputs.tag }}
	cache-to: type=inline

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