Dockerfile in ci_toolkit-1.5.23

- old
+ new

@@ -1,6 +1,6 @@
 # [Choice] Ruby version (use -bullseye variants on local arm64/Apple Silicon): 3, 3.0, 2, 2.7, 2.6, 3-bullseye, 3.0-bullseye, 2-bullseye, 2.7-bullseye, 2.6-bullseye, 3-buster, 3.0-buster, 2-buster, 2.7-buster, 2.6-buster
-ARG VARIANT=2-bullseye
+ARG VARIANT=3-bullseye
 FROM mcr.microsoft.com/vscode/devcontainers/ruby:0-${VARIANT}
 
 # [Choice] Node.js version: none, lts/*, 16, 14, 12, 10
 ARG NODE_VERSION="none"
 RUN if [ "${NODE_VERSION}" != "none" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
\ No newline at end of file