addressed comments. Reduced dockerfile, reduced docker build image ta… #4

	# This workflow is intended to be called manually when a new Docker image is needed.
	name: Build and Publish Docker Image

	on:
	workflow_dispatch:
	workflow_call:
	push:

	jobs:
	build:
	timeout-minutes: 15
	strategy:
	fail-fast: false
	matrix:
	build: [
	{name: ubuntu-22.04},
	{name: ubuntu-20.04},
	]

	name: Building docker image ${{ matrix.build.name }}
	runs-on: ${{ matrix.build.name }}

	steps:
	- name: Set environment variable
	run: echo "CI_IMAGE_NAME=ghcr.io/${{ github.repository }}/tt-umd-ci-${{ matrix.build.name }}" >> $GITHUB_ENV

	- name: Fix permissions
	run: sudo chmod 777 -R $GITHUB_WORKSPACE

	- name: Checkout repository
	uses: actions/checkout@v4

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Log in to GitHub Container Registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and export base Docker image
	uses: docker/build-push-action@v6
	with:
	context: .github
	file: .github/${{ matrix.build.name }}.Dockerfile
	push: true
	build-args: \|
	GIT_SHA=${{ github.sha }}
	tags: \|
	${{ env.CI_IMAGE_NAME}}:${{ github.sha }}
	${{ env.CI_IMAGE_NAME}}:latest

Provide feedback