diff --git a/Makefile b/Makefile
index c03bc35..a697b52 100644
--- a/Makefile
+++ b/Makefile
@@ -63,10 +63,7 @@ push-docker:
 	docker image push $(DOCKER_REPO)/$(DOCKER_NAME):latest
 
 css:
-	docker build -t mscom-css-compile -f css_compress.dockerfile .
-	rm "www/data/css/styles.css" "www/data/css/styles.min.css" || true
-	docker run --rm -v "$(shell pwd)/www:/project/www" "mscom-css-compile"
-	docker image rm mscom-css-compile
+	./data/css_compress/run.sh
 
 clean:
 	rm -rf ".run-data"
diff --git a/css_compress.dockerfile b/css_compress.dockerfile
index 1bf6e81..27b62fa 100644
--- a/css_compress.dockerfile
+++ b/css_compress.dockerfile
@@ -6,6 +6,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && apt-get clean && rm -rf /var/lib/apt/lists/*
 
 COPY ./data /project/data
+COPY ./www/data/css /project/www/data/css
+RUN chown -R 1000:1000 /project/www
 
 WORKDIR /project/data/css_compress
 
diff --git a/data/css_compress/run.sh b/data/css_compress/run.sh
new file mode 100755
index 0000000..aa8ec9c
--- /dev/null
+++ b/data/css_compress/run.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
+
+UUID=$(cat /proc/sys/kernel/random/uuid)
+CONTAINER_NAME="mscom-css-run-${UUID}"
+IMAGE_NAME="mscom-css-compile-${UUID}"
+
+cleanup() {
+    docker rm "$CONTAINER_NAME" 2>/dev/null || true
+    docker image rm "$IMAGE_NAME" 2>/dev/null || true
+}
+trap cleanup EXIT
+
+docker build -t "$IMAGE_NAME" -f "$PROJECT_DIR/css_compress.dockerfile" "$PROJECT_DIR"
+
+rm -f "$PROJECT_DIR/www/data/css/styles.css" "$PROJECT_DIR/www/data/css/styles.min.css"
+
+docker create --name "$CONTAINER_NAME" --stop-timeout 60 "$IMAGE_NAME"
+timeout 60 docker start -a "$CONTAINER_NAME"
+
+docker cp "$CONTAINER_NAME:/project/www/data/css/styles.css"     "$PROJECT_DIR/www/data/css/styles.css"
+docker cp "$CONTAINER_NAME:/project/www/data/css/styles.min.css" "$PROJECT_DIR/www/data/css/styles.min.css"