chore: create Nix flake to use in Dockerfile

Dockerfile

@@ -0,0 +1,28 @@
+# syntax=docker/dockerfile:1.7
+
+# Nix builder
+FROM nixos/nix:latest AS builder
+
+# Copy our source and setup our working dir
+COPY . /tmp/build
+WORKDIR /tmp/build
+
+# Build our Nix environment
+RUN nix \
+    --extra-experimental-features "nix-command flakes" \
+    --option filter-syscalls false \
+    build
+
+# Copy the Nix store closure into a directory
+RUN mkdir /tmp/nix-store-closure
+RUN cp -R $(nix-store -qR result/) /tmp/nix-store-closure
+
+# Final image
+FROM scratch
+
+WORKDIR /app
+
+# Copy /nix/store
+COPY --from=builder /tmp/nix-store-closure /nix/store
+COPY --from=builder /tmp/build/result /app
+CMD ["/app/bin/app"]

flake.nix

@@ -0,0 +1,37 @@
+{
+  description = "simde";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    pnpm2nix = {
+      url = "github:nzbr/pnpm2nix-nzbr";
+			inputs.nixpkgs.follows = "nixpkgs";
+      };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, pnpm2nix, ... } @ inputs:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = import nixpkgs { inherit system; };
+      in with pkgs; rec {
+        # Development environment
+        devShell = mkShell {
+          name = "simde";
+          nativeBuildInputs = [ nodejs nodePackages.pnpm ];
+        };
+
+        # Build package into dist/ dir with pnpm
+        dist = pnpm2nix.packages.${system}.mkPnpmPackage {
+          src = ./.;
+        };
+
+        # Create SIMDE dist/ + SWS bundle
+        packages.app = pkgs.writeShellScriptBin "app" ''
+          ${pkgs.static-web-server}/bin/static-web-server --root ${dist}.distDir
+        '';
+
+        # The default package when a specific package name isn't specified
+        defaultPackage = packages.app;
+      }
+    );
+}