diff --git a/compose.yaml b/compose.yaml
index 2f9ff46..0e321a3 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -9,7 +9,7 @@ services:
     user: 1000:1000
     volumes:
       - ~/S/japanese/manga:/mokuro/manga
-    command: mokuro --parent_dir "manga/One Piece Color" --disable_confirmation && ./zip.sh "manga/One Piece Color"
+    command: ./run.sh "manga/One Piece Color"
     runtime: nvidia
     restart: no
     network_mode: host
diff --git a/zip.sh b/run.sh
similarity index 80%
rename from zip.sh
rename to run.sh
index e224aa8..0d49c26 100755
--- a/zip.sh
+++ b/run.sh
@@ -1,10 +1,10 @@
-#!/usr/bin/env bash
-# Usage: ./zip.sh [directory]
-# Default is current directory
+#!/usr/bin/env sh
 set -Eeuo pipefail
 
 DIR="${1:-.}"
 
+mokuro --parent_dir "$DIR" --disable_confirmation
+
 cd "$DIR" || exit
 
 for f in *.mokuro; do
@@ -12,7 +12,7 @@ for f in *.mokuro; do
     base="${f%.mokuro}"
     dir="$base"
     zipfile="$base.zip"
-    if [[ -f "$zipfile" ]]; then
+    if [ -f "$zipfile" ]; then
         echo "Warning: Zip file $zipfile already exists, skipping."
     elif [ -d "$dir" ]; then
         echo "Zipping: $zipfile <- $f $dir/"