Update ruby Docker tag to v2.7.7

renovate[bot] · web-flow · commit c3b74d3610b4 · 2022-12-17T11:45:18.000Z
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.6.3
+FROM ruby:2.7.7
 
 RUN gem install bundler
 
