Bump node to v22

Dockerfile

@@ -8,10 +8,12 @@ RUN echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] http://packages.c
       curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
       echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list && \
       curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh && \
-      curl -sL https://deb.nodesource.com/setup_18.x | bash - && \
+      curl -sL https://deb.nodesource.com/setup_22.x | bash - && \
       wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - && \
       sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list' && \
       apt-get update && \
       apt-get install -y google-cloud-sdk nodejs yarn google-chrome-unstable --no-install-recommends && \
       apt-get autoremove && \
-      rm -rf /var/lib/apt/lists/*
+      apt-get autoclean && \
+      rm -rf /var/lib/apt/lists/* && \
+      rm -rf /var/lib/cache/*

README.md

@@ -4,7 +4,7 @@ Google Cloud capable Docker image for Ruby.
 ## Features
 
 - Ruby 3.4.3
-- Node.js v18
+- Node.js v22
 - gcloud
 - Bundler
 - Yarn