ci: move docker container creation to an action

ci/getcontainer.sh

@@ -1,55 +0,0 @@
-#!/bin/bash
-
-set -e
-
-IMAGE_NAME=$1
-DOCKERFILE_PATH=$2
-
-if [ "${IMAGE_NAME}" = "" ]; then
-	echo "usage: $0 image_name [dockerfile]"
-	exit 1
-fi
-
-if [ "${DOCKERFILE_PATH}" = "" ]; then
-	DOCKERFILE_PATH="${IMAGE_NAME}"
-fi
-
-if [ "${DOCKER_REGISTRY}" = "" ]; then
-	echo "DOCKER_REGISTRY environment variable is unset."
-	echo "Not running inside GitHub Actions or misconfigured?"
-	exit 1
-fi
-
-DOCKER_CONTAINER="${GITHUB_REPOSITORY}/${IMAGE_NAME}"
-DOCKER_REGISTRY_CONTAINER="${DOCKER_REGISTRY}/${DOCKER_CONTAINER}"
-
-echo "dockerfile=${DOCKERFILE_PATH}" >> $GITHUB_ENV
-echo "docker-container=${DOCKER_CONTAINER}" >> $GITHUB_ENV
-echo "docker-registry-container=${DOCKER_REGISTRY_CONTAINER}" >> $GITHUB_ENV
-
-# Identify the last git commit that touched the Dockerfiles
-# Use this as a hash to identify the resulting docker containers
-DOCKER_SHA=$(git log -1 --pretty=format:"%h" -- "${DOCKERFILE_PATH}")
-echo "docker-sha=${DOCKER_SHA}" >> $GITHUB_ENV
-
-DOCKER_REGISTRY_CONTAINER_SHA="${DOCKER_REGISTRY_CONTAINER}:${DOCKER_SHA}"
-
-echo "docker-registry-container-sha=${DOCKER_REGISTRY_CONTAINER_SHA}" >> $GITHUB_ENV
-echo "docker-registry-container-latest=${DOCKER_REGISTRY_CONTAINER}:latest" >> $GITHUB_ENV
-
-echo "::: logging in to ${DOCKER_REGISTRY} as ${GITHUB_ACTOR}"
-
-exists="true"
-docker login https://${DOCKER_REGISTRY} -u ${GITHUB_ACTOR} -p ${GITHUB_TOKEN} || exists="false"
-
-echo "::: pulling ${DOCKER_REGISTRY_CONTAINER_SHA}"
-
-if [ "${exists}" != "false" ]; then
-	docker pull ${DOCKER_REGISTRY_CONTAINER_SHA} || exists="false"
-fi
-
-if [ "${exists}" = "true" ]; then
-	echo "docker-container-exists=true" >> $GITHUB_ENV
-else
-	echo "docker-container-exists=false" >> $GITHUB_ENV
-fi