diff --git a/.dclintrc b/.dclintrc
new file mode 100644
index 0000000..1a28e2a
--- /dev/null
+++ b/.dclintrc
@@ -0,0 +1,11 @@
+{
+  "rules": {
+    "require-quotes-in-ports": [
+      1,
+      {
+        "quoteType": "double"
+      }
+    ],
+    "services-alphabetical-order": 0
+  }
+}
diff --git a/dclint.sh b/dclint.sh
index f5bca6d..f82d1c6 100755
--- a/dclint.sh
+++ b/dclint.sh
@@ -1,16 +1,26 @@
 #!/usr/bin/env bash
 set -euo pipefail
+
 STACKS_DIR="/srv/stacks"
-args=(
-	--rm
-	-t
-	-v "$STACKS_DIR:/app"
-	zavoloklom/dclint
-	.
-	-r
-	--disable-rule services-alphabetical-order
-)
-if [[ "${1:-}" == "--fix" ]]; then
-	args+=(--fix)
+docker_args=(--rm -v "$STACKS_DIR:/app")
+dclint_args=(. -r)
+
+if [[ -t 1 ]]; then
+	docker_args+=(-t)
 fi
-docker run "${args[@]}"
+
+case "${1:-}" in
+"")
+	;;
+--fix)
+	dclint_args+=(--fix)
+	;;
+*)
+	printf 'Usage: %s [--fix]\n' "${0##*/}" >&2
+	exit 2
+	;;
+esac
+
+exec docker run "${docker_args[@]}" \
+	zavoloklom/dclint \
+	"${dclint_args[@]}"