pkgs:
pkgs.dockerTools.pullImage rec {
imageName = "postgres";
imageDigest = "sha256:f85dd74a714c67792c72fc609becff10e0b0eaffca7b40aa1c6251d09c02b5d4";
hash = "sha256-UOvKUq2TqVLk/KUgugUWWl568ikgj0ck9WV7YWlUqWI=";
finalImageName = imageName;
finalImageTag = "15-alpine";
}