fix: update dockerfile

Dockerfile

@@ -8,7 +8,7 @@ RUN dart compile exe bin/cli.dart -o /app/dart_off_server
 # copy server file to basic image to run the app
 FROM ubuntu:latest
 WORKDIR /app
-RUN apk add --no-cache bash
+# RUN apk add --no-cache bash
 COPY --from=builder /app/dart_off_server /app/dart_off_server
 RUN ls -la
 RUN pwd