diff --git a/.github/workflows/build-docker.yml b/.github/workflows/build-docker.yml
index 47e2426..a20b313 100644
--- a/.github/workflows/build-docker.yml
+++ b/.github/workflows/build-docker.yml
@@ -7,7 +7,7 @@ jobs:
   build:
     strategy:
       matrix:
-        image: [pyenv]
+        image: [pyenv, nix-example]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
diff --git a/nix-example/Dockerfile b/nix-example/Dockerfile
new file mode 100644
index 0000000..f97f1dd
--- /dev/null
+++ b/nix-example/Dockerfile
@@ -0,0 +1,3 @@
+FROM nixos/nix
+RUN nix-env -iA nixpkgs.cowsay nixpkgs.fortune nixpkgs.lolcat
+ENTRYPOINT fortune | cowsay | lolcat