Split build and push step in two for PRs #16

	name: Build image on PR
	on:
	pull_request:
	branches:
	- main

	jobs:
	build:
	permissions:
	contents: read

	concurrency:
	group: image-pr-${{ github.event.pull_request.number }}

	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Build Docker image
	env:
	IMAGE_BASENAME: rchakode/realopinsight
	run: \|
	echo "setting build version"
	export RELEASE_VERSION="$(date +%F)-$(git rev-parse --short HEAD)"
	VERSION_FILE=realopinsight.pro
	perl -pi -e 's/^(PACKAGE_VERSION=).*/$1$ENV{RELEASE_VERSION}/' $VERSION_FILE
	cat $VERSION_FILE

	echo "building container image => ${IMAGE_BASENAME}:${RELEASE_VERSION}"
	IMAGE_TAGGED_NAME=${IMAGE_BASENAME}:${RELEASE_VERSION}
	docker build -t ${IMAGE_TAGGED_NAME} .
	echo "IMAGE_TAGGED_NAME=$IMAGE_TAGGED_NAME" >> "$GITHUB_ENV"

	- name: Push Docker image
	if: github.event.pull_request.head.repo.full_name == github.repository
	env:
	REGISTRY_USERNAME: ${{ secrets.CONTAINER_REGISTRY_USERNAME }}
	REGISTRY_PASSWORD: ${{ secrets.CONTAINER_REGISTRY_PASSWORD }}
	run: \|
	docker login --username ${REGISTRY_USERNAME} --password ${REGISTRY_PASSWORD}
	docker push $IMAGE_TAGGED_NAME

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