feat: 增加latest分支名称 #34

	name: Publish to GitHub

	on:
	push:
	branches:
	- v*
	- master

	env:
	IMAGE_NAME: code-server

	jobs:
	push:
	runs-on: ubuntu-latest
	if: github.event_name == 'push'

	steps:
	- uses: actions/checkout@v2

	- name: Build image
	run: docker build . --file Dockerfile --tag $IMAGE_NAME

	- name: Log into registry
	run: echo "${{ secrets.GITHUB_TOKEN }}" \| docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin

	- name: Set output
	id: vars
	run: echo ::set-output name=short_ref::${GITHUB_REF#refs/*/}

	- name: Push image
	run: \|
	IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/$IMAGE_NAME

	# Change all uppercase to lowercase
	IMAGE_ID=$(echo $IMAGE_ID \| tr '[A-Z]' '[a-z]')
	echo "image id: $IMAGE_ID"

	VERSION=$(echo "${{ steps.vars.outputs.short_ref }}" \| sed -e 's/^v//')
	[ "$VERSION" == "master" ] && VERSION=latest
	echo "version: $VERSION"

	echo IMAGE_ID=$IMAGE_ID
	echo VERSION=$VERSION

	docker tag $IMAGE_NAME $IMAGE_ID:$VERSION
	docker push $IMAGE_ID:$VERSION

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