1 files changed, 2 insertions, 1 deletions
diff --git a/nix/default.nix b/nix/default.nix
index 2a7792a..d586e2b 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -2,13 +2,14 @@
 let
   revision = "${self.lastModifiedDate}-${self.shortRev or self.dirtyShortRev or "dirty"}";
   version = self.shortRev or self.dirtyShortRev or "unstable-${self.lastModified}";
+  dockerTag = self.rev or self.dirtyRev or "unstable-${self.lastModified}";
   mkDocker = server:
     let
       PORT = 3000;
     in
     pkgs.dockerTools.streamLayeredImage {
       name = "registry.fly.io/alanpearce-eu";
-      tag = revision;
+      tag = dockerTag;
       contents = [ server ];
       config = {
         Cmd = [ "website" ];