docker_pull_or_build.sh

#!/usr/bin/env bash

set -e

# Should be GITHUB_TOKEN passed if Dockerfile requires installation from private repo
BUILD_ARGS=""
if [[ ! -z $1 ]];
then
  BUILD_ARGS="--build-arg GITHUB_TOKEN=$1"
fi

echo "pulling latest image from ${REGISTRY_HOST}, and building image from cache"

docker pull ${REGISTRY_HOST}/${APP_NAME}:latest || true
docker pull ${REGISTRY_HOST}/${APP_NAME}:${TRAVIS_COMMIT:0:7} || docker build --cache-from ${REGISTRY_HOST}/${APP_NAME}:latest ${BUILD_ARGS} -t ${REGISTRY_HOST}/${APP_NAME}:${TRAVIS_COMMIT:0:7} .
docker tag ${REGISTRY_HOST}/${APP_NAME}:${TRAVIS_COMMIT:0:7} ${REGISTRY_HOST}/${APP_NAME}:latest