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