From fc9040027d0917f7749ff4a5539eaed56603dcbd Mon Sep 17 00:00:00 2001
From: Jim Clark <slimslenderslacks@gmail.com>
Date: Sun, 14 May 2023 21:30:59 -0700
Subject: [PATCH] flake plus docker cli metadata

---
 Dockerfile | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 97058b2..8f5704b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,26 @@
-FROM golang:1.19-alpine AS build
+# syntax = docker/dockerfile:1.4
+FROM nixos/nix:latest AS builder
+
+WORKDIR /tmp/build
+RUN mkdir /tmp/nix-store-closure
+
+RUN \
+    --mount=type=cache,target=/nix,from=nixos/nix:latest,source=/nix \
+    --mount=type=cache,target=/root/.cache \
+    --mount=type=bind,target=/tmp/build \
+    <<EOF
+  ls -l /nix/store | wc
+  nix \
+    --extra-experimental-features "nix-command flakes" \
+    --extra-substituters "http://host.docker.internal?priority=10" \
+    --option filter-syscalls false \
+    --show-trace \
+    --log-format raw \
+    build . --out-link /tmp/output/result
+  cp -R $(nix-store -qR /tmp/output/result) /tmp/nix-store-closure
+EOF
+
+FROM scratch
 
 WORKDIR /app