fix: use bash instead of shebang

Dockerfile

@@ -1,15 +1,13 @@
 FROM node:20-bookworm-slim
 
-RUN apt-get update && apt-get install -y --no-install-recommends --no-install-suggests nginx
+RUN apt-get update && apt-get install -y --no-install-recommends --no-install-suggests nginx && mkdir -p /docker
 
 COPY nginx.conf /etc/nginx/nginx.conf
 
-COPY container-start.sh start.sh /usr/local/bin
-
-RUN chmod +x /usr/local/bin/container-start.sh /usr/local/bin/start.sh
+COPY container-start.sh start.sh /docker
 
 STOPSIGNAL SIGQUIT
 
-ENTRYPOINT [ "start.sh" ]
+ENTRYPOINT [ "bash", "/docker/start.sh" ]
 
 CMD [ "serve" ]

start.sh

@@ -2,6 +2,11 @@
 
 set -e
 
+SCRIPT_PATH=$(realpath $0)
+SCRIPT_DIR=$(dirname $SCRIPT_PATH)
+
+cd $SCRIPT_DIR
+
 [ $# -gt 0 ] && case $1 in
     serve)
     ;;
@@ -10,6 +15,6 @@ set -e
     ;;
 esac
 
-container-start.sh
+sh container-start.sh
 
 nginx -g 'daemon off;'