ci(default): add `apps.ci.shellcheck` to flake.nix

I can now run `nix run .#ci.shellcheck` to validate the shell scripts
with shellcheck in the repository.

The pipeline in buildKite will need to be updated.

Change-Id: Ia52ede86adfa58c9615b0f9e290ef5d5b8adb303
Reviewed-on: https://cl.fcuny.net/c/world/+/409
Tested-by: CI
Reviewed-by: Franck Cuny <franck@fcuny.net>

1 files changed, 6 insertions, 0 deletions

diff --git a/ops/ci/default.nix b/ops/ci/default.nix
new file mode 100644
index 0000000..be0c607
--- /dev/null
+++ b/ops/ci/default.nix
@@ -0,0 +1,6 @@
+{ pkgs }:
+
+{
+  fmt = import ./fmt.nix pkgs;
+  shell = import ./shellcheck.nix pkgs;
+}