Remove vestage of old monorepo and add new GitLab-CI config

Build Image:

  stage: build

  image: docker.kodo.org.uk/ci-images/buildkit/buildctl:latest

  tags: [buildkit]

  rules:

  - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH

  - if: $CI_PIPELINE_SOURCE == "schedule"

  - if: $CI_PIPELINE_SOURCE == "merge_request_event"

  script:

  - buildctl build

    --frontend=dockerfile.v0

    --local context=.

    --local dockerfile=.

    --opt platfrom=linux/amd64,linux/arm64

    --output type=image,name=${CI_REGISTRY_IMAGE}:build-${CI_PIPELINE_IID},push=true

#!/bin/bash

: ${PROXY_BASE_IMAGE:=debian:buster}

get_latest() {

	docker run --rm ${PROXY_BASE_IMAGE} \

		sh -c 'apt-get update >/dev/null && apt-cache show nginx' |

	sed -n '1,/Version:/ s/Version: //p'

}

get_version() {

	echo "${CI_COMMIT_SHORT_SHA}"

}

build() {

	docker_build \

		--build-arg base_image="${PROXY_BASE_IMAGE}" \

		--build-arg upstream_version="${UPSTREAM_VERSION}" \

		--tag $1

}