diff --git a/.github/workflows/ci-non-go.sh b/.github/workflows/ci-non-go.sh
new file mode 100755
index 0000000..026d526
--- /dev/null
+++ b/.github/workflows/ci-non-go.sh
@@ -0,0 +1,33 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash ../../shell.nix
+# shellcheck shell=bash
+
+set -eux
+
+failed=0
+
+if ! git ls-files '*.md' '*.yaml' '*.yml' | xargs prettier --list-different --write; then
+	failed=1
+fi
+
+if ! git ls-files '*.json' | xargs -I '{}' sh -c 'jq --sort-keys . {} > {}.t && mv {}.t {}'; then
+	failed=1
+fi
+
+if ! shfmt -f . | xargs shfmt -s -l -d; then
+	failed=1
+fi
+
+if ! shfmt -f . | xargs shellcheck; then
+	failed=1
+fi
+
+if ! terraform fmt -write -recursive deploy/terraform/; then
+	failed=1
+fi
+
+if ! git diff | (! grep .); then
+	failed=1
+fi
+
+exit "$failed"