diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 140efbb..21d6951 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -20,7 +20,7 @@ jobs:
           skopeo login --username ${{ secrets.DOCKER_USER }} --password ${{ secrets.DOCKER_PASSWORD }} "$REGISTRY"
 
           MAINTAG="sha-$(echo "$GITHUB_SHA" | cut -c 1-8)"
-          nix run .#upload-image "docker://$REGISTRY/$PACKAGE:$MAINTAG"
+          nix run --show-trace .#upload-image "docker://$REGISTRY/$PACKAGE:$MAINTAG"
           for TAG in \
             "$GITHUB_REF_NAME" \
             "$GITHUB_REF_NAME-$(date +%Y%m%d-%H%M%S)" \
diff --git a/docker.nix b/docker.nix
index a79ea5e..acd8435 100644
--- a/docker.nix
+++ b/docker.nix
@@ -1,20 +1,59 @@
-{ config, pkgs, ...}:
-
+{ config, pkgs, lib, ...}:
 let
 name = "node-red";
+packages =
+  with pkgs;
+[
+  nodejs
+  nodePackages.npm
+  nodePackages.node-red
+  #ungoogled-chromium
+];
 entrypoint = pkgs.writeShellApplication {
   name = "entrypoint";
 
-  runtimeInputs = with pkgs; with nodePackages; [
-    node-red
-    #ungoogled-chromium
-  ];
+  runtimeInputs = packages;
 
   text = ''
-    node-red -u "''${DATA-/data}" -s "''${SETTINGS-/data/settings.js}"
+    DATA="''${DATA-/data}"
+    cd "$DATA"
+    node-red -u "$DATA" -s "''${SETTINGS-/data/settings.js}"
   '';
 };
 in pkgs.dockerTools.streamLayeredImage {
       inherit name;
+      contents = pkgs.buildEnv {
+        name = "imgroot";
+        paths = (with pkgs; [
+          shadow
+          less
+          bashInteractive
+          coreutils
+          findutils
+          dockerTools.usrBinEnv
+          dockerTools.binSh
+          dockerTools.caCertificates
+          #dockerTools.fakeNss
+        ] ++ packages);
+      };
       config.Cmd = [ "${entrypoint}/bin/entrypoint" ];
+      config.WorkingDir = "/data";
+      config.Env = with pkgs; [ "HOME=/data" ];
+
+      enableFakechroot = true;
+      fakeRootCommands = ''
+        #    ${pkgs.runtimeShell}
+        mkdir -p tmp
+        chmod 1777 tmp
+        ${pkgs.dockerTools.shadowSetup}
+        groupadd -r node-red
+        useradd -r -g node-red node-red
+        id node-red 2>&1 > node-red.id
+        mkdir -p data
+        chown -R node-red:node-red data
+        chmod -R 750 data
+        date > build-date.txt
+      '';
+      extraCommands = ''
+      '';
 }