./lib/rubypitaya/app-template/docker/dev/Dockerfile in rubypitaya-2.27.1 vs ./lib/rubypitaya/app-template/docker/dev/Dockerfile in rubypitaya-3.0.0

@@ -1,5 +1,5 @@
-FROM ruby:2.7.2-slim
+FROM ruby:3.0.2-slim
 
 ENV LANG=C.UTF-8
 ENV LC_ALL=C.UTF-8
 
 RUN apt update && \