pkgs: pkgs.dockerTools.pullImage rec { imageName = "postgres"; imageDigest = "sha256:ef9d1517df69c4d27dbb9ddcec14f431a2442628603f4e9daa429b92ae6c3cd1"; hash = "sha256-qrYC2YmySd6lNiw2fsd3MFf5npg4/xgkyiT/Ty3g4ZE="; finalImageName = imageName; finalImageTag = "15-alpine"; }