feat: docker hub login #18

	name: CI

	on:
	push:
	branches:
	- main # 메인 브렌치에 브랜치 머지 시 자동으로 실행
	pull_request:
	branches:
	- '**' # 모든 브랜치에 PR 올릴 때 실행

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Set up Go 1.23
	uses: actions/setup-go@v5
	with:
	go-version: '1.23'
	- run: go version
	- name: Show build number
	run: \|
	echo "Build Number: ${{ github.run_number }}"
	- name: Show pull request number
	if: ${{ github.event_name == 'pull_request' }}
	run: \|
	echo "PR Number: ${{ github.event.pull_request.number }}"
	- name: Get PR Number for Main Branch Merge
	id: get_pr_number
	if: github.ref == 'refs/heads/main'
	run: \|
	PR_NUMBER=$(gh pr list --repo ${{ github.repository }} --state closed --json number,mergeCommit --jq ".[] \| select(.mergeCommit.oid == \"${{ github.sha }}\") \| .number")
	echo "PR_NUMBER=${PR_NUMBER}"
	echo "PR_NUMBER"="${PR_NUMBER}" >> $GITHUB_OUTPUT
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	- name: Set Docker Image Tag
	env:
	PR_NUMBER: ${{ steps.get_pr_number.outputs.PR_NUMBER }}
	run: \|
	if [ "${{ github.ref_name }}" == "main" ]; then
	DOCKER_IMAGE_TAG="1.1.$PR_NUMBER"
	else
	DOCKER_IMAGE_TAG="0.${{ github.event.pull_request.number }}.${{ github.run_number }}"
	fi
	echo "Docker Image Tag: $DOCKER_IMAGE_TAG"
	- name: Log in to Docker Hub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKER_USERNAME }}
	password: ${{ secrets.DOCKER_PASSWORD }}

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