replaced python installation method #23

	name: Build tercen studio image

	# Run when tag starts with "tercen/runtime"
	on:
	push:
	tags:
	- tercen-studio-**
	- tercen-code-**

	jobs:
	build:
	runs-on: self-hosted
	steps:
	# Checks-out repository under $GITHUB_WORKSPACE
	- uses: actions/checkout@v2
	- name: docker login
	run: \|
	docker login --username ${{ secrets.DOCKER_HUB_USERNAME }} --password ${{ secrets.DOCKER_HUB_PASSWORD }}
	- name: Get image name
	run: \|
	echo "IMAGE_NAME=$(echo "tercen/$GITHUB_REF_NAME" \| sed 's/_/:/')" >> $GITHUB_ENV
	- name: Check if image exists
	run: \|
	echo "IMAGE_MISSING=$(docker manifest inspect ${{ env.IMAGE_NAME }} > /dev/null ; echo $?)" >> $GITHUB_ENV
	echo "DIR_NAME=$(echo ${{ env.IMAGE_NAME }} \| grep -o -P '(?<=tercen/).*(?=:)')" >> $GITHUB_ENV
	- name: Build docker image
	# run only if image is missing (1)
	if: env.IMAGE_MISSING == 1
	run: \|
	docker build --build-arg GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} -t ${{ env.IMAGE_NAME }} ./docker/${{ env.DIR_NAME }}
	- name: docker push
	if: env.IMAGE_MISSING == 1
	run: \|
	docker push ${{ env.IMAGE_NAME }}

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