Update README.md #16

	name: Build image
	on:
	push:
	tags:
	- v*

	jobs:
	build:
	permissions:
	contents: read

	concurrency:
	group: image-${{ github.ref }}

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

	- name: Build and push Docker image
	env:
	IMAGE_NAME: rchakode/realopinsight
	REGISTRY_USERNAME: ${{ secrets.CONTAINER_REGISTRY_USERNAME }}
	REGISTRY_PASSWORD: ${{ secrets.CONTAINER_REGISTRY_PASSWORD }}
	run: \|
	echo "computing build version"
	export GIT_TAG=$(git describe --tags `git rev-list --tags --max-count=1`)
	export IMAGE_TAG=$(echo $GIT_TAG \| sed 's/v//')
	export RELEASE_VERSION=$IMAGE_TAG

	echo "patching final version in project file"
	VERSION_FILE=realopinsight.pro
	VERSION_LINE=$(grep -n '^PACKAGE_VERSION=' $VERSION_FILE \| cut -f1 -d:)
	VERSION_ORIG=$(grep '^PACKAGE_VERSION=' $VERSION_FILE \| cut -d= -f2)
	sed -i "${VERSION_LINE}s/${VERSION_ORIG}/${RELEASE_VERSION}/" $VERSION_FILE
	cat $VERSION_FILE

	echo "Building Docker image with tag => ${IMAGE_NAME}:${RELEASE_VERSION}"
	docker build -t ${IMAGE_NAME}:${RELEASE_VERSION} .

	docker login --username ${REGISTRY_USERNAME} --password ${REGISTRY_PASSWORD}

	echo "Pushing built image as latest"
	docker tag $IMAGE_NAME:${RELEASE_VERSION} ${IMAGE_NAME}:latest
	docker push $IMAGE_NAME:${RELEASE_VERSION}
	docker push $IMAGE_NAME

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