tweaked Dockerfile #25

	name: Tests and Build
	'on':
	push:
	branches:
	- alt2
	tags:
	- v*
	jobs:
	my-job:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout Code
	uses: actions/checkout@v3

	- name: Build Docker image
	run: docker build -t my-test-image .devcontainer
	# - name: Run tests using Docker image
	# run: docker run --rm my-test-image make test
	- name: show $PATH
	run: echo $PATH
	- name: show go
	run: which go
	- name: show go version
	run: which go1.21.0
	- name: build Makefile
	run: make && make test
	# runs:
	# using: 'docker'
	# image: Dockerfile'

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