s

check_image_cache.sh

#!/bin/bash

set -e

service_name=$1
branch_name=$2

prod_account=552131502238
dev_account=671197494237

temp_file_dir=/tmp/check-$service_name-docker-cached

mkdir -p $temp_file_dir

git checkout $branch_name

cp .dockerignore $temp_file_dir

sed 's/552131502238/671197494237/g' Dockerfile > $temp_file_dir/Dockerfile

git checkout master

cp $temp_file_dir/.dockerignore .

sed 's/552131502238/671197494237/g' Dockerfile > Dockerfile-master

mv Dockerfile-master Dockerfile

echo ""
echo "***********"
echo "Building non multistage master. This will take time"
docker build -t $service_name-cache-check:non-multistage-master -q .

cp $temp_file_dir/Dockerfile .

echo ""
echo "***********"
echo "Building multistage master. This should be quick if everything is cached"
docker build -t $service_name-cache-check:multistage-master --target=prod -q .

docker image history $service_name-cache-check:non-multistage-master > $temp_file_dir/non-multistage-master

docker image history $service_name-cache-check:multistage-master > $temp_file_dir/multistage-master

diff=`sdiff -s $temp_file_dir/non-multistage-master $temp_file_dir/multistage-master`

echo ""
echo "------------------------------------------"
echo "Detailed output can be found $temp_file_dir"
if [[ -z "$diff" ]]; then
        echo "Image built are the same. We are good to go"
else
        echo "Image built are not the same. We have the following diff"
        echo $diff
        exit 1
fi